Difference between revisions of "Bash start up script"

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(Created page with "2020-11-02 For now, the following is a minimal .bashrc start up script, which matches the one on this wiki's home page in the section on shell scripting in Unix and Unix-like...")
 
(noting dot bashrc amendments script changes, per new needs in VM and Docker environs.)
Line 12: Line 12:
 
# --- EOF ---
 
# --- EOF ---
 
</pre>
 
</pre>
 +
 +
 +
 +
<!--
 +
#!/bin/bash
 +
 +
##----------------------------------------------------------------------
 +
##
 +
##
 +
##  FILE:  dot-bashrc-amendments.sh
 +
##
 +
##
 +
##  LAST TOUCHED:  2021-06-04 THU
 +
##
 +
##
 +
##  DESCRIPTION:  short script to amend Debian and Ubuntu and or
 +
##    Bourne shell run-time config file, normally named '.bashrc'.
 +
##    Adds directory book-marking for up to thirty directories -- or
 +
##    file system paths -- making these accessible by means of
 +
##    three- and four- character aliases of the form 'gdnn' where
 +
##    nn is an integer in the range 1 to 30.
 +
##
 +
##
 +
##  HOW TO USE THIS SCRIPT:
 +
##
 +
##    To enjoy directory bookmark aliases implemented in this file, in
 +
##    a bash command line environment, the user may source this file by
 +
##    hand,
 +
##
 +
##    $ . dot-bashrc-amendments.sh
 +
##
 +
##    or alternately for convenience a given user may amend their
 +
##    .login or .bashrc start-up script to include a line which
 +
##    does the same sourcing of this file.
 +
##
 +
##
 +
##
 +
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
 +
##
 +
##  NOTES ON IMPLEMENTATION:
 +
##
 +
##  (1) When this script is called with no arguments, it reads a run-
 +
##    time config file to determine which group of file-stored,
 +
##    bookmarked paths to read into shell variables and to make readily
 +
##    accessible via path navigation aliases.  If the run-time config
 +
##    is not found the shell creates it and populates it with its
 +
##    identifier '1' for the first group among 1..9 supported groups
 +
##    of path (also referred to as directory) bookmarks.
 +
##
 +
##  (2) When this script is called with a first argument in the range
 +
##    1..9, a single character number representation, the script
 +
##    writes this number to its run-time config file, and uses this
 +
##    number to choose among groups of saved paths written to the
 +
##    given user's dot-bashrc-amendments stored path files.  If not
 +
##    called with a valid bookmarks group id, this script falls back
 +
##    to doing the tasks in (1)
 +
##
 +
##
 +
##
 +
##
 +
##  TO DO:
 +
##
 +
##    [ ]  add to this script function which detects and shows
 +
##        the script's own aliases, and another function(s) to
 +
##        allow user to change aliases, e.g. in event that alias
 +
##        conflicts with a locally installed command,
 +
##
 +
##    [ ]  add to this script the ability to open arbitrary text
 +
##        file containing bookmarked paths, and to show it without
 +
##        replacing present bookmarks,
 +
##
 +
##    [ ]  *** Summary Report Of Bookmarked Paths ***
 +
##        add to this script a function to show bookmarks it
 +
##        holds and status of whether each given bookmark exists
 +
##        as a valid path on the local file system,
 +
##
 +
##    [ ]  2017-12-02 - add parameters sanity check to routine 'read_bookmarks_file',
 +
##
 +
##
 +
##
 +
##
 +
##
 +
##  TO CONFIRM:
 +
##
 +
##    [ ]  2017-12-02 - make sure that variable 'index' is visible in
 +
##        the scope of the script which sets the alias 'sp' which
 +
##        saves bookmarked paths,
 +
##
 +
##
 +
##
 +
##  REFERENCES:
 +
##
 +
##    See 'The Linux Documentation Project' at http://tldp.org/
 +
##
 +
##    *  http://tldp.org/LDP/abs/html/testconstructs.html . . . [, [[ ]], (( )) - builtin test,
 +
##        extended test, arithmetic test in bash context
 +
##
 +
##    *  http://tldp.org/LDP/abs/html/testbranch.html    . . . note shell 'shift' parameters operator
 +
##
 +
##    *  http://tldp.org/LDP/abs/html/complexfunct.html  . . . $1 $2 are first parameters to shell functions
 +
##
 +
##    *  http://www.grymoire.com/Unix/Sed.html
 +
##
 +
##    *  https://www.cyberciti.biz/faq/unix-howto-read-line-by-line-from-file/
 +
##
 +
##    *  http://www.linuxjournal.com/content/return-values-bash-functions
 +
##
 +
##
 +
##
 +
##  AUTHORS AND MAINTAINERS:
 +
##
 +
##    Ted Havelka, ted@cs.pdx.edu
 +
##
 +
##
 +
##
 +
##----------------------------------------------------------------------
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  SECTION - script variables of directory-bookmarker project
 +
##----------------------------------------------------------------------
 +
 +
# --- SCRIPT VARS BEGIN ---
 +
 +
GREP=/bin/grep
 +
SED=/bin/sed
 +
 +
 +
SCRIPT_NAME=${0}
 +
# echo "\$SCRIPT_NAME assigned value of \${0} and holds ${SCRIPT_NAME},"
 +
SCRIPT_NAME="dot-bash-amendments.sh"
 +
 +
## 2018-07-13 - added by Ted:
 +
#SCRIPT_NAME_ABBR="dbrca"
 +
# Directory Bookmarking Run time Config
 +
SCRIPT_NAME_ABBR="dbrca"
 +
 +
 +
DIRECTORY_OF_BOOKMARKS_FILES=".bookmarked-paths"
 +
 +
FILENAME_FORM_OF_BOOKMARKED_PATHS="bookmarked-paths-nn.txt"
 +
 +
FILENAME_OF_BOOKMARKS_RUNTIME_CONFIGURATION="bookmarked-paths.rc"
 +
 +
BOOKMARKS_GROUPS_SUPPORTED="1..9"
 +
 +
# Directory Book Marker watermark, for sane $PATH amendments:
 +
DBM_WATERMARK="${HOME}/path-amended-by-directory-bookmarker"
 +
 +
# . . .
 +
bookmarks_group_id=1
 +
 +
# Shell variable used in 'sp' alias to save bookmarked paths:
 +
index=0
 +
 +
 +
## 2017-12-02 - How are these variables used? - TMH
 +
bash_settings_file="${HOME}/.bash_settings_local"
 +
 +
 +
##
 +
## - SECTION - flags to enable and disable dot_bashrc_amendments actions
 +
##
 +
 +
FLAG__AMEND_PATH_WITH_WINDOWS_PATH=0
 +
FLAG__DISPLAY_EXTRA_VARS_FOLLOWING_SHOWN_PATHS=0
 +
 +
 +
# --- SCRIPT VARS END ---
 +
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  SECTION - script functions
 +
##----------------------------------------------------------------------
 +
 +
function show_aliases_in_this_script()
 +
{
 +
## 2017-12-02 NEED - Contributor Ted noting that following command will
 +
##  show all script lines, including comments and commented out
 +
##  commands (which are also comments), which this function's name
 +
##  does not indicate.  NEED to fix this or rename this function . . .
 +
 +
    $(GREP) -n alias $0
 +
}
 +
 +
 +
 +
function set_aliases()
 +
{
 +
##----------------------------------------------------------------------
 +
##  PURPOSE: . . .
 +
##----------------------------------------------------------------------
 +
 +
#    echo "setting some shell safety and shortcut aliases . . ."
 +
 +
 +
## Some important shell safe-guarding aliases for Unix and Linux systems:
 +
 +
    alias rm='rm -i'
 +
    alias cp='cp -i'
 +
    alias mv='mv -i'
 +
 +
# list files in long format starting from a cleared screen:
 +
    alias lss='clear; ls -lF'
 +
 +
# list directories only in long format:
 +
    alias dls='ls -l | grep "^d"'
 +
 +
 +
 +
# run custom Remote UPtime script:
 +
    alias rup='${HOME}/bin/rup'
 +
 +
# . . .
 +
    alias cvs='cvs -d ${HOME}/cvs -e /usr/bin/vi'
 +
 +
 +
# Shell shortcuts to cd to local oft used directories:
 +
 +
    alias archive='cd ${HOME}/archive; echo "Now at `pwd`" '
 +
    alias bin='cd ${HOME}/bin; echo "Now at `pwd`" '
 +
    alias notes='cd ${HOME}/notes; echo "Now at `pwd`" '
 +
 +
 +
# 2012-01-25
 +
 +
    alias xterm='xterm -bg black -fg white -geometry 108x36'
 +
    alias x='xterm -bg black -fg white -geometry 115x36 &'
 +
 +
 +
# NOTE 2017-12-02 - xlock command generally not available on last
 +
#  three years' Debian and Ubuntu software package mirrors.  Related
 +
#  command 'xscreensaver-command -lock' is installable . . .
 +
 +
    alias xlock='/usr/bin/xlock -mode scooter -count 100'
 +
 +
 +
    alias restore-path-var='. ${HOME}/dot-bashrc-amendments.sh restore-path-variable'
 +
 +
 +
} # end function set_aliases()
 +
 +
 +
 +
 +
function set_aliases_for_bookmarking()
 +
{
 +
 +
#    echo "setting aliases for bookmarking of paths . . ."
 +
 +
    alias cb='echo "active directory bookmarks group presently set to group ${bookmarks_group_id},"'
 +
 +
#---------------------------------------------------------------------
 +
# STEP:  create aliases for saving paths and returning to paths
 +
#---------------------------------------------------------------------
 +
 +
# setting of bookmarks 1 through 10:
 +
 +
    alias sd1='export D1=`pwd`; echo "Set variable D1 to `pwd`" '
 +
    alias sd2='export D2=`pwd`; echo "Set variable D2 to `pwd`" '
 +
    alias sd3='export D3=`pwd`; echo "Set variable D3 to `pwd`" '
 +
    alias sd4='export D4=`pwd`; echo "Set variable D4 to `pwd`" '
 +
    alias sd5='export D5=`pwd`; echo "Set variable D5 to `pwd`" '
 +
 +
    alias sd6='export D6=`pwd`; echo "Set variable D6 to `pwd`" '
 +
    alias sd7='export D7=`pwd`; echo "Set variable D7 to `pwd`" '
 +
    alias sd8='export D8=`pwd`; echo "Set variable D8 to `pwd`" '
 +
    alias sd9='export D9=`pwd`; echo "Set variable D9 to `pwd`" '
 +
    alias sd10='export D10=`pwd`; echo "Set variable D10 to `pwd`" '
 +
 +
# setting of bookmarks 11 through 20:
 +
 +
    alias sd11='export D11=`pwd`; echo "Set variable D11 to `pwd`" '
 +
    alias sd12='export D12=`pwd`; echo "Set variable D12 to `pwd`" '
 +
    alias sd13='export D13=`pwd`; echo "Set variable D13 to `pwd`" '
 +
    alias sd14='export D14=`pwd`; echo "Set variable D14 to `pwd`" '
 +
    alias sd15='export D15=`pwd`; echo "Set variable D15 to `pwd`" '
 +
 +
    alias sd16='export D16=`pwd`; echo "Set variable D16 to `pwd`" '
 +
    alias sd17='export D17=`pwd`; echo "Set variable D17 to `pwd`" '
 +
    alias sd18='export D18=`pwd`; echo "Set variable D18 to `pwd`" '
 +
    alias sd19='export D19=`pwd`; echo "Set variable D19 to `pwd`" '
 +
    alias sd20='export D20=`pwd`; echo "Set variable D20 to `pwd`" '
 +
 +
# setting of bookmarks 21 through 30:
 +
 +
    alias sd21='export D21=`pwd`; echo "Set variable D21 to `pwd`" '
 +
    alias sd22='export D22=`pwd`; echo "Set variable D22 to `pwd`" '
 +
    alias sd23='export D23=`pwd`; echo "Set variable D23 to `pwd`" '
 +
    alias sd24='export D24=`pwd`; echo "Set variable D24 to `pwd`" '
 +
    alias sd25='export D25=`pwd`; echo "Set variable D25 to `pwd`" '
 +
 +
    alias sd26='export D26=`pwd`; echo "Set variable D26 to `pwd`" '
 +
    alias sd27='export D27=`pwd`; echo "Set variable D27 to `pwd`" '
 +
    alias sd28='export D28=`pwd`; echo "Set variable D28 to `pwd`" '
 +
    alias sd29='export D29=`pwd`; echo "Set variable D29 to `pwd`" '
 +
    alias sd30='export D30=`pwd`; echo "Set variable D30 to `pwd`" '
 +
 +
#    echo "- TEST - setting alias SD31 . . ."
 +
    alias sd31='echo "Doh, thirty one bookmarks not supported!"'
 +
 +
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
## 1024  cd foo; echo $?
 +
## 1025  cd foo; echo $?; if (( $? && 1 )); then echo "dir not found!"; else echo "now at $PWD"; fi
 +
## 1026  cd foo; if (( $? && 1 )); then echo "dir not found!"; else echo "now at $PWD"; fi
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
 +
## 2018-07-13 - added by Ted for improved notices when selected dir not found:
 +
alias announce_new_dir='if (( $? && 1 )); then echo "- ${SCRIPT_NAME_ABBR} - dir not found!"; else echo "now at $PWD"; fi'
 +
 +
# navigation to bookmarked directories 1 through 10:
 +
 +
#    alias gd1='cd $D1; echo "Now at $D1" '
 +
    alias gd1='cd $D1; if (( $? && 1 )); then echo "- ${SCRIPT_NAME_ABBR} - dir not found!"; else echo "now at $PWD"; fi'
 +
    alias gd2='cd $D2; announce_new_dir'
 +
    alias gd3='cd $D3; announce_new_dir'
 +
    alias gd4='cd $D4; announce_new_dir'
 +
    alias gd5='cd $D5; announce_new_dir'
 +
 +
    alias gd6='cd $D6; announce_new_dir'
 +
    alias gd7='cd $D7; announce_new_dir'
 +
    alias gd8='cd $D8; announce_new_dir'
 +
    alias gd9='cd $D9; announce_new_dir'
 +
    alias gd10='cd $D10; announce_new_dir'
 +
 +
# navigation to bookmarked directories 11 through 20:
 +
 +
    alias gd11='cd $D11; announce_new_dir'
 +
    alias gd12='cd $D12; announce_new_dir'
 +
    alias gd13='cd $D13; announce_new_dir'
 +
    alias gd14='cd $D14; announce_new_dir'
 +
    alias gd15='cd $D15; announce_new_dir'
 +
 +
    alias gd16='cd $D16; announce_new_dir'
 +
    alias gd17='cd $D17; announce_new_dir'
 +
    alias gd18='cd $D18; announce_new_dir'
 +
    alias gd19='cd $D19; announce_new_dir'
 +
    alias gd20='cd $D20; announce_new_dir'
 +
 +
# navigation to bookmarked directories 21 through 30:
 +
 +
    alias gd21='cd $D21; announce_new_dir'
 +
    alias gd22='cd $D22; announce_new_dir'
 +
    alias gd23='cd $D23; announce_new_dir'
 +
    alias gd24='cd $D24; announce_new_dir'
 +
    alias gd25='cd $D25; announce_new_dir'
 +
 +
    alias gd26='cd $D26; announce_new_dir'
 +
    alias gd27='cd $D27; if (( $? && 1 )); then echo "- ${SCRIPT_NAME_ABBR} - dir not found!"; else echo "now at $PWD"; fi'
 +
    alias gd28='cd $D28; announce_new_dir'
 +
    alias gd29='cd $D29; announce_new_dir'
 +
    alias gd30='cd $D30; announce_new_dir'
 +
 +
 +
 +
 +
 +
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
##  Important - show paths
 +
##  "Show paths" alias 's' here defined:
 +
##  Banner message at end of alias 's', NEED to factor banner to a shell
 +
##  function of its own - TMH 2021-05-24
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
 +
alias s='\
 +
echo
 +
echo "Bookmarked paths in bookmarks group ${bookmarks_group_id} are:"
 +
echo
 +
\
 +
echo "variable D1 points to $D1";\
 +
echo variable D2 points to $D2; echo variable D3 points to $D3; echo variable D4 points to $D4; echo variable D5 points to $D5; echo variable D6 points to $D6; echo variable D7 points to $D7; echo variable D8 points to $D8; echo variable D9 points to $D9; echo variable D10 points to $D10;\
 +
\
 +
echo " - - - - -";\
 +
\
 +
echo variable D11 points to $D11; echo variable D12 points to $D12; echo variable D13 points to $D13; echo variable D14 points to $D14; echo variable D15 points to $D15; echo variable D16 points to $D16; echo variable D17 points to $D17; echo variable D18 points to $D18; echo variable D19 points to $D19; echo variable D20 points to $D20;\
 +
\
 +
echo " - - - - -";\
 +
\
 +
echo "variable D21 points to $D21";\
 +
echo "variable D22 points to $D22";\
 +
echo "variable D23 points to $D23";\
 +
echo "variable D24 points to $D24";\
 +
echo "variable D25 points to $D25";\
 +
\
 +
echo "variable D26 points to $D26";\
 +
echo "variable D27 points to $D27";\
 +
echo "variable D28 points to $D28";\
 +
echo "variable D29 points to $D29";\
 +
echo "variable D30 points to $D30";\
 +
\
 +
echo; \
 +
echo "...these paths in bookmarks group ${bookmarks_group_id}."
 +
#echo EDITOR is set to: $EDITOR;\
 +
#echo "see file dot-bashrc-amendments.sh, typically in home directory of present user,";\
 +
#echo "for implementation of directory bookmarks and D1..D30 variables - TMH";\
 +
#echo "this shell script written by Ted Havelka and licensed under GNU Public License, 2005 - 2021";\
 +
\
 +
echo'
 +
 +
 +
## 2021-05-24 MON - adding alias to show only first twenty bookmarked
 +
##  directories, for smaller terminal windows:
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
 +
alias s20='\
 +
echo
 +
echo "First twenty bookmarked paths in group ${bookmarks_group_id} are:"
 +
echo
 +
\
 +
echo "variable D1 points to $D1";\
 +
echo variable D2 points to $D2; echo variable D3 points to $D3; echo variable D4 points to $D4; echo variable D5 points to $D5; echo variable D6 points to $D6; echo variable D7 points to $D7; echo variable D8 points to $D8; echo variable D9 points to $D9; echo variable D10 points to $D10;\
 +
\
 +
echo " - - - - -";\
 +
\
 +
echo variable D11 points to $D11; echo variable D12 points to $D12; echo variable D13 points to $D13; echo variable D14 points to $D14; echo variable D15 points to $D15; echo variable D16 points to $D16; echo variable D17 points to $D17; echo variable D18 points to $D18; echo variable D19 points to $D19; echo variable D20 points to $D20;\
 +
\
 +
echo'
 +
 +
##------------------------------------------------------------------------------
 +
 +
 +
 +
 +
alias sp='bookmarked_path[0]="zztop";
 +
  bookmarked_path[1]=$D1;    bookmarked_path[2]=$D2;    bookmarked_path[3]=$D3;    bookmarked_path[4]=$D4;    bookmarked_path[5]=$D5;
 +
  bookmarked_path[6]=$D6;    bookmarked_path[7]=$D7;    bookmarked_path[8]=$D8;    bookmarked_path[9]=$D9;  bookmarked_path[10]=$D10;
 +
 +
  bookmarked_path[11]=$D11;  bookmarked_path[12]=$D12;  bookmarked_path[13]=$D13;  bookmarked_path[14]=$D14;  bookmarked_path[15]=$D15;
 +
  bookmarked_path[16]=$D16;  bookmarked_path[17]=$D17;  bookmarked_path[18]=$D18;  bookmarked_path[19]=$D19;  bookmarked_path[20]=$D20;
 +
 +
  bookmarked_path[21]=$D21;  bookmarked_path[22]=$D22;  bookmarked_path[23]=$D23;  bookmarked_path[24]=$D24;  bookmarked_path[25]=$D25;
 +
  bookmarked_path[26]=$D26;  bookmarked_path[27]=$D27;  bookmarked_path[28]=$D28;  bookmarked_path[29]=$D29;  bookmarked_path[30]=$D30;
 +
 +
## 2017-12-14 THU:
 +
  echo "about to save bookmarked paths using old script code in alias,"
 +
  echo "in this code \$filename holds '$filename',"
 +
  echo "to local file $filename saving bookmarked directories:";
 +
  echo -n > $filename;
 +
  for index in 0  1 2 3 4 5 6 7 8 9 10  11 12 13 14 15 16 17 18 19 20  21 22 23 24 25 26 27 28 29 30; do
 +
      echo "saving bookmarked path $index = ${bookmarked_path[$index]}";
 +
      echo ${bookmarked_path[$index]} >> $filename;
 +
  done'
 +
 +
 +
 +
# alias clearpaths='\
 +
# echo "Clearing bookmarked paths in present shell . . ." \
 +
# echo "Note:  bookmarked paths in bookmarks group ${bookmarks_group_id} still stored in ${filename}" \
 +
# export D1=""; export D2=""; export D3=""; export D4=""; export D5=""; \
 +
# export D6=""; export D7=""; export D8=""; export D9=""; export D10=""; \
 +
# \
 +
# export D11=""; export D12=""; export D13=""; export D14=""; export D15=""; \
 +
# export D16=""; export D17=""; export D18=""; export D19=""; export D20=""; \
 +
# \
 +
# export D21=""; export D22=""; export D23=""; export D24=""; export D25=""; \
 +
# export D26=""; export D27=""; export D28=""; export D29=""; export D30="";'
 +
 +
 +
## 2017-12-14 - unexpected new behavior observed when backslash characters
 +
##  appear in alias defining statement above, removing those:
 +
 +
alias clearpaths='
 +
echo "Clearing bookmarked paths in present shell . . ."
 +
echo "Note:  bookmarked paths in bookmarks group ${bookmarks_group_id} still stored in ${filename}"
 +
echo "use \`lp${bookmarks_group_id}\` to reload those bookmarked paths."
 +
export D1=""; export D2=""; export D3=""; export D4=""; export D5=""; \
 +
export D6=""; export D7=""; export D8=""; export D9=""; export D10=""; \
 +
\
 +
export D11=""; export D12=""; export D13=""; export D14=""; export D15=""; \
 +
export D16=""; export D17=""; export D18=""; export D19=""; export D20=""; \
 +
\
 +
export D21=""; export D22=""; export D23=""; export D24=""; export D25=""; \
 +
export D26=""; export D27=""; export D28=""; export D29=""; export D30="";'
 +
 +
 +
 +
# 2017-12-02 - NEED TO ADDRESS INTENT AND ACTION OF load-paths:
 +
# This alias likely doesn't work as intended, to load one set
 +
# of bookmarked paths over others . . .    - TMH
 +
 +
alias load-paths=' \
 +
export D1=${bookmarked_path[1]}; \
 +
export D2=${bookmarked_path[2]}; \
 +
export D3=${bookmarked_path[3]}; \
 +
export D4=${bookmarked_path[4]}; \
 +
export D5=${bookmarked_path[5]}; \
 +
export D6=${bookmarked_path[6]}; \
 +
export D7=${bookmarked_path[7]}; \
 +
export D8=${bookmarked_path[8]}; \
 +
export D9=${bookmarked_path[9]}; \
 +
export D10=${bookmarked_path[10]}; \
 +
\
 +
export D11=${bookmarked_path[11]}; \
 +
export D12=${bookmarked_path[12]}; \
 +
export D13=${bookmarked_path[13]}; \
 +
export D14=${bookmarked_path[14]}; \
 +
export D15=${bookmarked_path[15]}; \
 +
export D16=${bookmarked_path[16]}; \
 +
export D17=${bookmarked_path[17]}; \
 +
export D18=${bookmarked_path[18]}; \
 +
export D19=${bookmarked_path[19]}; \
 +
export D20=${bookmarked_path[20]}; \
 +
\
 +
export D21=${bookmarked_path[21]}; \
 +
export D22=${bookmarked_path[22]}; \
 +
export D23=${bookmarked_path[23]}; \
 +
export D24=${bookmarked_path[24]}; \
 +
export D25=${bookmarked_path[25]}; \
 +
export D26=${bookmarked_path[26]}; \
 +
export D27=${bookmarked_path[27]}; \
 +
export D28=${bookmarked_path[28]}; \
 +
export D29=${bookmarked_path[29]}; \
 +
export D30=${bookmarked_path[30]}; \
 +
echo "Loaded user-saved paths:"; s'
 +
 +
 +
# Aliases to load different groups of bookmarked paths:
 +
 +
    alias lp1='. ${HOME}/dot-bashrc-amendments.sh 1'
 +
    alias lp2='. ${HOME}/dot-bashrc-amendments.sh 2'
 +
    alias lp3='. ${HOME}/dot-bashrc-amendments.sh 3'
 +
    alias lp4='. ${HOME}/dot-bashrc-amendments.sh 4'
 +
    alias lp5='. ${HOME}/dot-bashrc-amendments.sh 5'
 +
 +
    alias lp6='. ${HOME}/dot-bashrc-amendments.sh 6'
 +
    alias lp7='. ${HOME}/dot-bashrc-amendments.sh 7'
 +
    alias lp8='. ${HOME}/dot-bashrc-amendments.sh 8'
 +
    alias lp9='. ${HOME}/dot-bashrc-amendments.sh 9'
 +
    alias lp10='. ${HOME}/dot-bashrc-amendments.sh 10'
 +
 +
 +
# 2017-12-14 - Alias 'show non-empty bookmarks' added by Ted:
 +
 +
    alias sne='
 +
echo
 +
echo "Showing non-empty bookmarks in bookmarks group ${bookmarks_group_id}:"
 +
echo
 +
bookmarked_path[1]=$D1;    bookmarked_path[2]=$D2;    bookmarked_path[3]=$D3;    bookmarked_path[4]=$D4;    bookmarked_path[5]=$D5;
 +
bookmarked_path[6]=$D6;    bookmarked_path[7]=$D7;    bookmarked_path[8]=$D8;    bookmarked_path[9]=$D9;  bookmarked_path[10]=$D10;
 +
 +
bookmarked_path[11]=$D11;  bookmarked_path[12]=$D12;  bookmarked_path[13]=$D13;  bookmarked_path[14]=$D14;  bookmarked_path[15]=$D15;
 +
bookmarked_path[16]=$D16;  bookmarked_path[17]=$D17;  bookmarked_path[18]=$D18;  bookmarked_path[19]=$D19;  bookmarked_path[20]=$D20;
 +
 +
bookmarked_path[21]=$D21;  bookmarked_path[22]=$D22;  bookmarked_path[23]=$D23;  bookmarked_path[24]=$D24;  bookmarked_path[25]=$D25;
 +
bookmarked_path[26]=$D26;  bookmarked_path[27]=$D27;  bookmarked_path[28]=$D28;  bookmarked_path[29]=$D29;  bookmarked_path[30]=$D30;
 +
 +
for index in 1 2 3 4 5 6 7 8 9 10  11 12 13 14 15 16 17 18 19 20  21 22 23 24 25 26 27 28 29 30; do
 +
 +
    if [ -z ${bookmarked_path[$index]} ]; then
 +
        echo "bookmarked_path[$index] not set," >> /dev/null
 +
    else
 +
        echo "\$D${index} set to ${bookmarked_path[$index]},"
 +
    fi
 +
done
 +
echo
 +
echo "Note:  dot-bash-amendments script supports thirty (30) bookmarked paths per bookmarks group."
 +
echo'
 +
 +
} # end function set_aliases_for_bookmarking()
 +
 +
 +
 +
 +
function read_bookmarks_runtime_config()
 +
{
 +
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
## VARS BEGIN
 +
 +
    local rname="read_bookmarks_runtime_config"
 +
 +
    local line="DEFAULT_LINE_TO_BE_READ_FROM_FILE"
 +
 +
    local bookmarks_group_id=""
 +
 +
## VARS END
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
   
 +
 +
 +
#    echo "* * * SCRIPT FUNCTION ${rname}() IMPLEMENTATION UNDERWAY * * *"
 +
 +
    filename=${HOME}/${DIRECTORY_OF_BOOKMARKS_FILES}/${FILENAME_OF_BOOKMARKS_RUNTIME_CONFIGURATION}
 +
 +
    if [ -e ${filename} ]; then
 +
        # read bookmarked paths runtime config file . . .
 +
#        echo "${rname}:  reading directory bookmarks runtime configuration file ${filename},"
 +
#        cat ${filename}
 +
 +
        read -r line < ${filename}
 +
#        echo "line 1 holds:  ${line}"
 +
 +
    else
 +
        touch ${filename}
 +
        if [ -e ${filename} ]; then
 +
            echo "1" >> ${filename}
 +
        else
 +
            echo "${SCRIPT_NAME}:  - WARNING - unable to open and unable to create runtime config file!"
 +
            echo "${SCRIPT_NAME}:  - will start with bookmarks group set to 1,"
 +
            echo "${SCRIPT_NAME}:  - presently bookmarks groups 1 through 9 supported."
 +
        fi
 +
    fi
 +
 +
    echo ${line}
 +
## 2017-12-14 - Commented echo statement and variable for later time when
 +
##  this script able to parse several settings from rc file:
 +
#    echo ${bookmarks_group_id}
 +
 +
} # end function read_bookmarks_runtime_config()
 +
 +
 +
 +
 +
function write_bookmarks_runtime_config()
 +
{
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
##  2017-12-14 - Script contributor Ted noting that this function to
 +
##  write the bookmarks run-time config file is nearly identical to
 +
##  the function to read this same file.  Wondering if there's an
 +
##  elegant way to combine the two functions?  - TMH
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
 +
    echo "* * * Script function write_bookmarks_runtime_config() implementation underway * * *"
 +
    echo "called with bookmarks group identifier '${1}',"
 +
 +
    filename=${HOME}/${DIRECTORY_OF_BOOKMARKS_FILES}/${FILENAME_OF_BOOKMARKS_RUNTIME_CONFIGURATION}
 +
 +
    if [ -e ${filename} ]; then
 +
        # write one value bookmarked paths runtime config file, overwriting all data in this file:
 +
        echo "${SCRIPT_NAME}:  writing directory bookmarks runtime configuration file . . ."
 +
        echo ${1} > ${filename}
 +
    else
 +
        touch ${filename}
 +
        if [ -e ${filename} ]; then
 +
            echo ${1} > ${filename}
 +
        else
 +
            echo "${SCRIPT_NAME}:  - WARNING - unable to open and unable to create runtime config file!"
 +
            echo "${SCRIPT_NAME}:  - will start with bookmarks group set to 1,"
 +
            echo "${SCRIPT_NAME}:  - presently bookmarks groups 1 through 9 supported."
 +
        fi
 +
    fi
 +
}
 +
 +
 +
 +
 +
 +
function read_bookmarks_file()
 +
{
 +
 +
#    echo "*** Routine 'read_bookmarks_file' development in progress, ***"
 +
#    echo "first two arguments from caller are '$1' and '$2',"
 +
#    echo "variable \${SED} holds '${SED}',"
 +
 +
    local bookmarked_paths_group=${2}
 +
 +
REGEX="[1-9]"
 +
#    if [[ ${bookmarked_paths_group} =~ [1-5] ]] ; then
 +
    if [[ ${bookmarked_paths_group} =~ ${REGEX} ]] ; then
 +
        echo "caller requests valid bookmarks file identified by '${2}', which is in the range ${BOOKMARKS_GROUPS_SUPPORTED}"
 +
    else
 +
        echo "- NOTE - caller requests unsupported or unknown bookmarks file identified by '${2}',"
 +
        echo "- NOTE - defaulting to read bookmarked directories in bookmarks group 1,"
 +
        bookmarked_paths_group=1
 +
    fi
 +
 +
##    bookmarks_filename=$(echo ${FILENAME_FORM_OF_BOOKMARKED_PATHS} | ${SED} s/nn/0${2}/)
 +
    bookmarks_filename=$(echo ${FILENAME_FORM_OF_BOOKMARKED_PATHS} | ${SED} s/nn/0${bookmarked_paths_group}/)
 +
 +
    echo "will read bookmarks from file named ${bookmarks_filename},"
 +
 +
## * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 +
##  NOTE - had trouble getting these export statements to fly . . .
 +
##
 +
##  Ahh finally makes sense now 2017 DEC, these export statements
 +
##  don't express explicit variable names.  That is, bash must see
 +
##  a shell script declared array element as something other than a
 +
##  valid variable name:                                        - TMH
 +
## * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 +
 +
# export ${bookmarked_path[0]}
 +
# export ${bookmarked_path[1]}
 +
# export ${bookmarked_path[2]}
 +
# export ${bookmarked_path[3]}
 +
# export ${bookmarked_path[4]}
 +
# export ${bookmarked_path[5]}
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  STEP:  retrieve saved paths from previous user session
 +
##----------------------------------------------------------------------
 +
 +
# filename="${HOME}/.bash_paths_saved"
 +
# filename="${HOME}/bookmarked-paths.txt"  . . . commmented 2017-12-02 SAT
 +
filename=${HOME}/${DIRECTORY_OF_BOOKMARKS_FILES}/${bookmarks_filename}
 +
 +
## 2017-02-09 THU - To be added, support for storing and perusing multiple directory bookmarks files:
 +
filename__list_of_bookmark_files="${HOME}/bookmarked-path-files.txt"
 +
 +
 +
 +
# REFERENCE:  http://tldp.org/LDP/abs/html/arrays.html
 +
 +
declare -a bookmarked_path=()
 +
 +
 +
 +
if [ -e ${filename} ]; then
 +
    bookmarked_path=( $(cat "$filename") )  #  Stores contents of this script
 +
                                    #+ ($bash_settings_local) in an array.
 +
else
 +
#    echo "$O:  no local bash settings file named ${bash_settings_file} found," > /dev/null
 +
    echo "${SCRIPT_NAME}:  - WARNING - direcory bookmarks file named ${filename} not found!"
 +
    echo "${SCRIPT_NAME}:  - not able to read in bookmarked directories from this file,"
 +
    echo "${SCRIPT_NAME}:  - but creating to hold paths going forward . . ."
 +
    touch ${filename}
 +
    return
 +
fi
 +
 +
 +
    if [ ]; then
 +
        echo ""
 +
        echo "- DIAG START -"
 +
        echo "after reading bookmarks file,"
 +
        echo "\${bookmarked_path[1]} holds '${bookmarked_path[1]}'"
 +
        echo "\${bookmarked_path[2]} holds '${bookmarked_path[2]}'"
 +
        echo "\${bookmarked_path[3]} holds '${bookmarked_path[3]}'"
 +
        echo "- DIAG END -"
 +
        echo ""
 +
    fi
 +
 +
 +
# 2006-11-27
 +
# Prior to storing user-saved paths in a local file, path
 +
# variables were assigned zero-length strings and exported like this:
 +
#
 +
# export D1=""
 +
#
 +
# Now these variables are exported the same way but assigned
 +
# differently . . .
 +
 +
# echo "reading saved paths from file, skipping first place-holder token '${bookmarked_path[0]}' . . ."
 +
 +
    export D1=${bookmarked_path[1]}
 +
    export D2=${bookmarked_path[2]}
 +
    export D3=${bookmarked_path[3]}
 +
    export D4=${bookmarked_path[4]}
 +
    export D5=${bookmarked_path[5]}
 +
 +
    export D6=${bookmarked_path[6]}
 +
    export D7=${bookmarked_path[7]}
 +
    export D8=${bookmarked_path[8]}
 +
    export D9=${bookmarked_path[9]}
 +
    export D10=${bookmarked_path[10]}
 +
 +
    export D11=${bookmarked_path[11]}
 +
    export D12=${bookmarked_path[12]}
 +
    export D13=${bookmarked_path[13]}
 +
    export D14=${bookmarked_path[14]}
 +
    export D15=${bookmarked_path[15]}
 +
 +
    export D16=${bookmarked_path[16]}
 +
    export D17=${bookmarked_path[17]}
 +
    export D18=${bookmarked_path[18]}
 +
    export D19=${bookmarked_path[19]}
 +
    export D20=${bookmarked_path[20]}
 +
 +
    export D21=${bookmarked_path[21]}
 +
    export D22=${bookmarked_path[22]}
 +
    export D23=${bookmarked_path[23]}
 +
    export D24=${bookmarked_path[24]}
 +
    export D25=${bookmarked_path[25]}
 +
 +
    export D26=${bookmarked_path[26]}
 +
    export D27=${bookmarked_path[27]}
 +
    export D28=${bookmarked_path[28]}
 +
    export D29=${bookmarked_path[29]}
 +
    export D30=${bookmarked_path[30]}
 +
 +
 +
    if [ ]; then
 +
        echo ""
 +
        echo "- DIAG START -"
 +
        echo "after exporting \$D1..\$D30,"
 +
        echo "\$D1 holds '$D1',"
 +
        echo "\$D2 holds '$D2',"
 +
        echo "\$D3 holds '$D3',"
 +
        echo "- DIAG END -"
 +
        echo ""
 +
    fi
 +
 +
 +
} # end function read_bookmarks_file()
 +
 +
 +
 +
 +
function clear_paths_function()
 +
{
 +
 +
#    echo "clear_paths_function:  clearing bookmarked paths in current shell, setting \$D1..\$D30 to '',"
 +
 +
    export D1=""; export D2=""; export D3=""; export D4=""; export D5="";
 +
    export D6=""; export D7=""; export D8=""; export D9=""; export D10="";
 +
 +
    export D11=""; export D12=""; export D13=""; export D14=""; export D15="";
 +
    export D16=""; export D17=""; export D18=""; export D19=""; export D20="";
 +
 +
    export D21=""; export D22=""; export D23=""; export D24=""; export D25="";
 +
    export D26=""; export D27=""; export D28=""; export D29=""; export D30="";
 +
 +
}
 +
 +
 +
 +
 +
function amend_path_var_with_windows_paths()
 +
{
 +
##----------------------------------------------------------------------
 +
## 2021-05-21 FRI - This shell function added to dot-bashrc-amendments.sh
 +
##  to factor PATH envirnment variables amendments which add
 +
##  Windows 10 paths contaning spaces.
 +
##----------------------------------------------------------------------
 +
 +
if [ ${FLAG__AMEND_PATH_WITH_WINDOWS_PATH} -eq 1 ]; then
 +
 +
# 2021-04-13 - added for Windows 10, ARM toolchain use:
 +
        PATH=/c/Users/thavelka/bin/arm-gcc/8-2019-q3-update/bin:"${PATH}"
 +
        PATH=/c/Users/thavelka/bin/arm-gcc/8-2019-q3-update/arm-none-eabi/bin:"${PATH}"
 +
 +
## 2021-05-12 - added for Windows 10, Python 2.7.16 (Ted needs this to precede Python 3.9.5 path in envvar):
 +
#        PATH=/c/Python27:"${PATH}"
 +
 +
# 2021-04-15 - added for Windows 10, OpenOCD:
 +
        PATH=/c/Users/thavelka/bin/OpenOCD-20210407-0.10.0/bin:"${PATH}"
 +
 +
# 2021-05-11 - added for Windows 10, Nordic nRF command line tools namely mergehex:
 +
        PATH="c:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin":"${PATH}"
 +
 +
# 2021-05-21 - added for Oracle VirtualBox utilities:
 +
PATH="C:\Program Files\Oracle\VirtualBox":"${PATH}"
 +
 +
# 2018-01-19 - add a pattern to the path to avoid multple path variable
 +
#  amendments per shell session:
 +
        PATH="${PATH}:$DBM_WATERMARK"
 +
else
 +
    echo "not adding Windows paths to \$PATH envvar,"
 +
fi
 +
}
 +
 +
 +
 +
function amend_path_variable()
 +
{
 +
##----------------------------------------------------------------------
 +
##  PURPOSE:  amend user's $PATH environment variable
 +
##
 +
##  NEED:  to add logic so that for a given shell session, when this
 +
##  script called a second or successive time it does not amend the
 +
##  $PATH variable with duplicate paths.  Need a test . . .  - TMH
 +
##
 +
##----------------------------------------------------------------------
 +
 +
    string=`echo $PATH | grep $DBM_WATERMARK`
 +
 +
    if [ -z "$string" ]
 +
    then
 +
        path_as_found=${PATH}
 +
 +
# Amending the default path variable:
 +
 +
#        PATH="/usr/bin:${PATH}"
 +
        PATH="${PATH}":/sbin
 +
        PATH="${PATH}":/usr/sbin
 +
        PATH="${PATH}":/opt/bin
 +
        PATH="${PATH}":/opt/cross/bin
 +
        PATH="${PATH}":/opt/nxp/lpcxpresso-8p2p2/lpcxpresso/tools/bin
 +
        PATH="${PATH}":/opt/nxp/lpcxpresso-8p2p2/lpcxpresso
 +
        PATH="${PATH}":/opt/cross/x-tools/arm-unknown-linux-gnueabi/bin
 +
#        PATH="${PATH}":.
 +
        PATH="${PATH}":${HOME}/bin
 +
        PATH="${PATH}":/usr/local/mysql/bin
 +
        PATH="${PATH}":/usr/lib/xscreensaver
 +
        PATH="${PATH}":/etc/init.d
 +
 +
# 2014-01-24 . . .
 +
        PATH="${PATH}":/var/opt/sam-ba_cdc_cdc_linux
 +
 +
# 2017-12-04 . . .
 +
        PATH="${PATH}":~/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin
 +
 +
 +
# 2021-05-21 - call to new shell function to factor Windows path amendments
 +
#  into that separate function:
 +
    amend_path_var_with_windows_paths
 +
 +
 +
 +
# 2018-01-19 - add a pattern to the path to avoid multple path variable
 +
#  amendments per shell session:
 +
        PATH="${PATH}:$DBM_WATERMARK"
 +
 +
    else
 +
        echo "\$PATH variable already amended, directory book-marker leaving untouched."
 +
    fi
 +
 +
}
 +
 +
 +
 +
function restore_path_variable_to_as_found()
 +
{
 +
    PATH=$path_as_found
 +
}
 +
 +
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##
 +
##  SECTION - main line code of dot-bash-amendments.sh
 +
##
 +
##----------------------------------------------------------------------
 +
 +
echo "starting,"
 +
 +
## Following test fails when script passed an argument, should succeed . . .
 +
#if [[ "$ARGC" -eq "1" ]]; then
 +
#    echo "called with first argument set to '$1',"
 +
#fi
 +
 +
## Following test succeeds:
 +
if [[ "$#" -eq "1" ]]; then
 +
    echo "called with first argument set to '$1',"
 +
#    echo "calling 'read directory bookmarks file' with no arguments . . ."
 +
#    read_bookmarks_file
 +
fi
 +
 +
 +
 +
## Note:  single brackets in the following test work, double brackets
 +
##  seem to evaulate differently, may be because we're using a shell
 +
##  file test . . .
 +
 +
bookmarks_dir="${HOME}/${DIRECTORY_OF_BOOKMARKS_FILES}"
 +
 +
# echo "- DEV - constructed bookmarked paths directory which holds '$bookmarks_dir',"
 +
## 2017-12-03 - DISCOVERY:  hey why does bash 'file exists' test return true when
 +
## +  the argument to the file test is a zero-length string?  Or undefined variable?
 +
## +  Does Mendel Cooper's guide explain this behavior?  There was a type
 +
## +  just below with 'bookmarks_dir' spelled 'booksmarks_dir' . . .  - TMH
 +
 +
if [ -e ${bookmarks_dir} ]; then
 +
#    echo "found directory '${bookmarks_dir}' for bookmarked path files, not creating this directory."
 +
    echo "found directory '${bookmarks_dir}' for bookmarked path files, not creating this directory." > /dev/null
 +
else
 +
#    echo "creating directory ${bookmarks_dir} . . ."
 +
    mkdir -pv ${bookmarks_dir}
 +
fi
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  STEP:  set shell aliases . . . moved to two functions of this script
 +
##----------------------------------------------------------------------
 +
 +
    set_aliases
 +
 +
    set_aliases_for_bookmarking
 +
 +
#    echo "- DIAG BEGIN - calling builtin shell command 'alias' to check aliases just set:"
 +
#    alias
 +
#    echo "- DIAG END -"
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  STEP - read file holding bookmarked paths
 +
##----------------------------------------------------------------------
 +
 +
#    echo "- DIAG BEGIN - calling function (not alias) to clear any directory bookmarks . . ."
 +
    clear_paths_function
 +
#    echo "- DIAG END - \$D1 holds '$D1'"
 +
 +
##  *  https://stackoverflow.com/questions/806906/how-do-i-test-if-a-variable-is-a-number-in-bash
 +
 +
    re='^[0-9]+$'
 +
    if [[ $1 =~ $re ]]; then
 +
        if [ "$#" -gt 0 ]; then
 +
            bookmarks_group_id=${1}
 +
        else
 +
            bookmarks_group_id=1
 +
        fi
 +
    fi
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  STEP - check for valid bookmarks group identifier, should be
 +
##  an integer value between 1 and 9 for now, 2017 December:
 +
##----------------------------------------------------------------------
 +
 +
bookmarked_paths_group_in_script_main_line=${1}
 +
 +
if [[ ${bookmarked_paths_group_in_script_main_line} =~ [1-9] ]] ; then
 +
    echo "script called with bookmarks group number ${bookmarked_paths_group_in_script_main_line}, in range ${BOOKMARKS_GROUPS_SUPPORTED}"
 +
    echo "which we support as of 2017 December."
 +
    write_bookmarks_runtime_config ${bookmarked_paths_group_in_script_main_line}
 +
else
 +
    if [ -z ${bookmarked_paths_group_in_script_main_line} ]; then
 +
#        echo "setting bookmarks group to default value of 1, first group of bookmarks among ${BOOKMARKS_GROUPS_SUPPORTED}"
 +
#        bookmarked_paths_group_in_script_main_line=1
 +
 +
        echo "script called without bookmarked paths group specified,"
 +
        echo "looking for last-used bookmarks group in dot-bash-amendments run-time config file . . ."
 +
        bookmarks_group_id=$(read_bookmarks_runtime_config)
 +
        echo "- DEV - from rc file read bookmarks group id '${bookmarks_group_id}',"
 +
    else
 +
        echo "- NOTE - script called with unsupported bookmarks group id,"
 +
        echo "- NOTE - id we got is '${bookmarked_paths_group_in_script_main_line}',"
 +
        echo "- NOTE - setting bookmarks group to default value of 1, first group of bookmarks among ${BOOKMARKS_GROUPS_SUPPORTED}"
 +
        bookmarked_paths_group_in_script_main_line=1
 +
    fi
 +
fi
 +
 +
 +
# echo "calling bash amendments function to read run-time config file . . ."
 +
# read_bookmarks_runtime_config
 +
 +
echo "calling 'read directory bookmarks file' with arguments '$0 ${bookmarks_group_id}' . . ."
 +
read_bookmarks_file $0 ${bookmarks_group_id}
 +
 +
 +
 +
 +
## See http://tldp.org/LDP/abs/html/testconstructs.html, example script 7-1:
 +
 +
if [ ]; then
 +
    echo ""
 +
    echo "- DIAG START in main-line code of script -"
 +
    echo "back from call to read_bookmarks_file() which exports \$D1..\$D30,"
 +
    echo "\$D1 holds '$D1',"
 +
    echo "\$D2 holds '$D2',"
 +
    echo "\$D3 holds '$D3',"
 +
    echo "- DIAG END in main-line code of script -"
 +
    echo ""
 +
fi
 +
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  STEP - amend environment variables
 +
##----------------------------------------------------------------------
 +
 +
#
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
##  NOTE - path environment variable amendments, mostly for
 +
##  work on Debian and Ubuntu Linux based systems
 +
##
 +
##  NOTE - when $PATH variable includes present working directory, e.g.
 +
##  "." then buildroot 2.x complains and bails during project
 +
##  compilation.  For smooth buildroot project builds, keep the
 +
##  current working directory commented out.  Safer to run programs
 +
##  in cwd using ./[program_name] syntax anyway . . .  - TMH
 +
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 +
#
 +
 +
# Amending the default path variable:
 +
 +
    if [ "$1" == "restore-path-variable" ]; then
 +
echo "- dbm - RESTORING PATH VARIABLE . . ."
 +
        restore_path_variable_to_as_found
 +
    else
 +
        amend_path_variable
 +
    fi
 +
 +
 +
# Concurrent Versions System (CVS) variables:
 +
 +
    CVSROOT="/home/fulano/cvs"
 +
    CVS_RSH=""
 +
#    export EDITOR=/usr/bin/vim . . . commented out 2012-01-25 - TMH
 +
    export EDITOR=/usr/bin/vi
 +
    HISTSIZE=1000
 +
    HISTFILESIZE=1000
 +
 +
# Variables as shortcuts:
 +
 +
    archive=${HOME}/archive
 +
 +
# Enable tsocks transparent proxy service by setting this environment
 +
# variable:
 +
 +
## Note - needed back in 2004, 2005 for to enable proxy server
 +
##  settings . . .
 +
 +
#    export LD_PRELOAD=/lib/libtsocks.so.1.8
 +
#    export LD_PRELOAD=/usr/lib/libtsocks.so.1.8
 +
 +
 +
 +
##----------------------------------------------------------------------
 +
##  2014-02-19 - added by Ted . . .
 +
##
 +
##  STEP - cross compile variables to export
 +
##
 +
##  reference http://www.x.org/wiki/CrossCompilingXorg/
 +
##----------------------------------------------------------------------
 +
 +
# export CROSS_COMPILE=arm-none-linux-gnueabi-
 +
export CROSS_COMPILE=arm-unknown-linux-gnueabi-
 +
 +
export SESSION_MANAGER=lightdm
 +
 +
 +
# . ~/.bookmarked-paths/set-proxies.sh
 +
 +
 +
echo "done."
 +
 +
 +
 +
# EOF ( end of file )
 +
 +
-->
  
  
 
<!-- comment -->
 
<!-- comment -->

Revision as of 00:11, 5 June 2021

2020-11-02

For now, the following is a minimal .bashrc start up script, which matches the one on this wiki's home page in the section on shell scripting in Unix and Unix-like environments: 

#!/usr/bin

if [ -e $HOME/Desktop/dot-bashrc-amendments.sh ]; then
    . $HOME/Desktop/dot-bashrc-amendments.sh
fi

# --- EOF ---




Retrieved from "https://wiki.neelanurseries.com/index.php?title=Bash_start_up_script&oldid=3970"