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Excerpt from AskUbuntu article:

sudo umount /dev/sdb
sudo dd if=/path/to/ubuntu.iso of=/dev/sdb bs=1M

 [    6.266884] [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)
 [    6.266902] radeon 0000:01:00.0: disabling GPU acceleration

$ sudo cfdisk /dev/sda

Syncing disks.

$ sudo mke2fs -j /dev/sda1
mke2fs 1.42.12 (29-Aug-2014)
Creating filesystem with 244190390 4k blocks and 61054976 inodes
Filesystem UUID: dfb1e141-85c0-43b0-930c-6bb5dde6d9aa
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
        102400000, 214990848

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done     

$

$ sudo dpkg -i --force-breaks dpkg_1.18.4ubuntu1_i386.deb

   $ sudo aptitude -o APT::Force-LoopBreak=1

 *  https://wiki.ubuntu.com/DpkgTriggers

Preparing to unpack libc-bin_2.27-2_i386.deb ...
dpkg: error processing archive libc-bin_2.27-2_i386.deb (--install):
 triggers ci file contains unknown directive `interest-await'
Errors were encountered while processing:
 libc-bin_2.27-2_i386.deb

user@localhost:~$ gtf 1920 1080 60

  # 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz
  Modeline "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync

user@localhost:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 8.9 (jessie)
Release:        8.9
Codename:       jessie

user@localhost:~$

user@localhost:/var/log$ grep -n EE Xorg.0.log
15:     (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
342:[    27.938] (EE) open /dev/dri/card0: No such file or directory
344:[    27.938] (EE) open /dev/dri/card0: No such file or directory
351:[    27.945] (EE) open /dev/fb0: No such file or directory
359:[    27.946] (EE) open /dev/fb0: No such file or directory
360:[    27.946] (EE) Screen 0 deleted because of no matching config section.
362:[    27.946] (EE) Screen 0 deleted because of no matching config section.
364:[    27.946] (EE) Screen 0 deleted because of no matching config section.
2689:[    28.915] (EE) AIGLX: reverting to software rendering

user@localhost:/var/log$ grep -n 'LoadModule: ' Xorg.0.log
47:[    27.193] (II) LoadModule: "glx"
58:[    27.669] (II) LoadModule: "ati"
64:[    27.719] (II) LoadModule: "radeon"
70:[    27.795] (II) LoadModule: "modesetting"
76:[    27.832] (II) LoadModule: "fbdev"
82:[    27.842] (II) LoadModule: "vesa"
346:[    27.938] (II) LoadModule: "fbdevhw"
354:[    27.946] (II) LoadModule: "fbdevhw"
368:[    27.946] (II) LoadModule: "vbe"
374:[    27.994] (II) LoadModule: "int10"
396:[    28.200] (II) LoadModule: "ddc"
2651:[    28.611] (II) LoadModule: "shadow"
2657:[    28.621] (II) LoadModule: "fb"
2664:[    28.630] (II) LoadModule: "int10"
2694:[    31.327] (II) LoadModule: "evdev"

user@localhost:/var/log$ grep -n UnloadModule Xorg.0.log
361:[    27.946] (II) UnloadModule: "radeon"
363:[    27.946] (II) UnloadModule: "modesetting"
365:[    27.946] (II) UnloadModule: "fbdev"

user@localhost:/var/log$ grep -n radeon Xorg.0.log
64:[    27.719] (II) LoadModule: "radeon"
65:[    27.720] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
66:[    27.795] (II) Module radeon: vendor="X.Org Foundation"
361:[    27.946] (II) UnloadModule: "radeon"

user@localhost:/var/log$

user@localhost:~/Desktop$ sudo ifup eth4
2018-04-12 - called with $IFACE set to eth4,
user[1678]: WARNING: Initialising interface eth4 which does not have link

user@localhost:/etc/network$ sudo ifup -v eth4
Configuring interface eth4=eth4 (inet)
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/ethtool
run-parts: executing /etc/network/if-pre-up.d/vde2

run-parts --exit-on-error --verbose /etc/network/if-up.d
run-parts: executing /etc/network/if-up.d/00check-network-cable
2018 check_status:  above IF-ELSE block to call /sbin/ethtool or other,
2018 check_status:  calling check_status_ethtool . . .
2018-04-12 - called with $IFACE set to eth4,
 +  and $ABORT_NO_LINK holds 'iyes',
 +  changing $ABORT_NO_LINK to 'yes',
2018 check_status_ethtool:  as a test returning 0 in place of 1 when link not found . . .
2018 check_status:  back from routine check_status_ethtool, $status holds 0,
2018 check_status:  returning 0 to calling script . . .
run-parts: executing /etc/network/if-up.d/10check-duplicate-ip
run-parts: executing /etc/network/if-up.d/20static-routes
run-parts: executing /etc/network/if-up.d/30check-gateway
run-parts: executing /etc/network/if-up.d/avahi-daemon
run-parts: executing /etc/network/if-up.d/ethtool
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-05vlan
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-10eth-interfacename
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-10lo-linkup
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-30link
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-40address
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-60specialcommands
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-60staticroutes
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-80proxy-arp
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-80redirects
run-parts: executing /etc/network/if-up.d/ifupdown-scripts-zg2-90flags
run-parts: executing /etc/network/if-up.d/mountnfs
run-parts: executing /etc/network/if-up.d/openssh-server
run-parts: executing /etc/network/if-up.d/upstart
user@localhost:/etc/network$ which run-parts
/bin/run-parts

   $ ssh-keygen -t rsa

   $ cat ~/.ssh/id_rsa.pub | ssh user@123.45.56.78 "mkdir -p ~/.ssh && cat >>  ~/.ssh/authorized_keys"

Host *
    ServerAliveInterval 300
    ServerAliveCountMax 2

Creating config file /etc/php/7.0/cgi/php.ini with new version
Setting up php7.0 (7.0.25-0ubuntu0.16.04.1) ...
Setting up php (1:7.0+35ubuntu6) ...
Setting up shtool (2.0.8-8) ...
Setting up php7.0-dev (7.0.25-0ubuntu0.16.04.1) ...
update-alternatives: using /usr/bin/php-config7.0 to provide /usr/bin/php-config (php-config) in auto mode
update-alternatives: using /usr/bin/phpize7.0 to provide /usr/bin/phpize (phpize) in auto mode
Setting up php-all-dev (1:35ubuntu6) ...
Setting up php-cgi (1:7.0+35ubuntu6) ...
Setting up php-cli (1:7.0+35ubuntu6) ...
Setting up php-dev (1:7.0+35ubuntu6) ...
Setting up php-doc (20140201-1ubuntu1) ...
Setting up php7.0-mysql (7.0.25-0ubuntu0.16.04.1) ...

Creating config file /etc/php/7.0/mods-available/mysqlnd.ini with new version

Creating config file /etc/php/7.0/mods-available/mysqli.ini with new version

 We have a new and strict firewall policy in place, which is blocking GNU gpg requests from our work site to the greater internet.  Here are some initial references to the issue, both of which mention a protocol called hkps, and also a default gpg port 11371 . . .

user@localhost:~$ gpg --keyserver pgpkeys.mit.edu --recv-key 7638D0442B90D010
gpg: directory `/home/ted/.gnupg' created
gpg: new configuration file `/home/ted/.gnupg/gpg.conf' created
gpg: WARNING: options in `/home/ted/.gnupg/gpg.conf' are not yet active during this run
gpg: keyring `/home/ted/.gnupg/secring.gpg' created
gpg: keyring `/home/ted/.gnupg/pubring.gpg' created
gpg: requesting key 2B90D010 from hkp server pgpkeys.mit.edu
^C
gpg: Interrupt caught ... exiting

user@localhost:~$ gpg --keyserver pgpkeys.mit.edu --recv-key 7638D0442B90D010
gpg: requesting key 2B90D010 from hkp server pgpkeys.mit.edu
^C
gpg: Interrupt caught ... exiting

user@localhost:~$

## Started 2018-30-29 - TMH
## Reference - https://wiki.archlinux.org/index.php/GnuPG
keyserver hkp://pool.sks-keyservers.net:443

gpg --keyserver pgpkeys.mit.edu --recv-key 010908312D230C5F
gpg -a --export 010908312D230C5F | sudo apt-key add -

*  https://askubuntu.com/questions/13065/how-do-i-fix-the-gpg-error-no-pubkey

 1010  sudo netstat -tulnp | grep 10443
 1011  sudo netstat -tulnp | grep 53
 1012  sudo netstat -tulnp | grep 443
 1013  sudo netstat -tulnp | grep 180
 1014  sudo netstat -tulnp | grep ssh
 1015  ps aex | grep sshd
 1016  cd /etc/init.d
 1017  ls
 1018  vi ssh 
 1019  sudo ./ssh status
 1020  date
 1021  history

Vagrant Cascadian < * e-mail address here * >

AttachmentsDec 7 (1 day ago)

to Juergen, Santiago, Reprobuilds, bug-apl
On 2017-12-05, Juergen Sauermann wrote:
> I have adopted the environment variable approach, which is now
> contained in *SVN 1026*. (and therefore also in the next GNU APL release).

That's great news!

> I took the freedom to change your patch from:
>
> +    BUILD_DATE=`date -u "%F %R:%S %Z" --date=@$SOURDCE_DATE_EPOCH`
>
> to:
>
> + BUILD_DATE=`date -u "+%F %R:%S %Z" --date=$SOURCE_DATE_EPOCH`

Unfortunately, the "@" in the --date argument is necessary for it to
work correctly when SOURCE_DATE_EPOCH is specified:

  $ date -u "+%F %R:%S %Z" --date=1412583777
  date: invalid date ‘1412583777’
  $ date -u "+%F %R:%S %Z" --date=@1412583777
  2014-10-06 08:22:57 UTC
  $ date -u "+%F %R:%S %Z" --date=
  2017-12-06 00:00:00 UTC

At least, that's how it works on my Debian system...

live well,
  vagrant

#!/bin/bash

DATABASE_LIST="information_schema mysql phpmyadmin wikidb database_1 database_2 database_3 ..."

SERVER_NAME="example_database_server"

user="root"
pass_phrase_for_mysql="database-passphrase"
options_extra="--skip-lock-tables"

response="n"

mode_interactive="n"

echo "shell script starting,"

for database in ${DATABASE_LIST}; 
do echo "backing up $SERVER_NAME database $database . . .";

#    command="mysqldump --databases $database -u$user -p$pass_phrase_for_mysql $options_extra >> au-database-back-up--${database}.sql"
    command="mysqldump --databases $database -u$user -p$pass_phrase_for_mysql $options_extra"
    redirect="au-database-back-up--${database}.sql"

    if [ $mode_interactive = 'y' ]; then

        echo "build command '$command' and database back-up filename'$redirect',"
        echo "full command will be '$command' > '$redirect',"
        echo "trying running this command and redirect? [y/N/q]  yes, no, 'q' to quit"

        read response
        if [ $response = 'Y' -o $response = 'y' ]; then
            ${command} > $redirect
        elif [ $response = 'N' -o $response = 'n' ]; then
            echo "skipping present command . . ."
        elif [ $response = 'Q' -o $response = 'q' ]; then
            echo "stopping script '$0' and exiting."
            break
        fi
        echo

    else

        echo "$0:  backing up database '$database' to file '$redirect' . . ."
        ${command} > $redirect
        ls -l $redirect

    fi

done

echo "done."

exit 0

#!/bin/bash

## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
## Started 2017-12-15 FRI - script to parse and show Linux kernel
##  version from top-level makefile in set of kernel sources.  Patterns
##  to `grep` chosen based on kernel version identifiers in first
##  three lines of typical kernel top-level makefile.  Example:
##
##  $ head -n 6 Makefile
##  VERSION = 4
##  PATCHLEVEL = 9
##  SUBLEVEL = 66
##  EXTRAVERSION =
##  NAME = Roaring Lionus
##
##
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

if [ ]; then
    head -n 5 Makefile | grep ^VERSION | cut -d " " -f 3
    head -n 5 Makefile | grep ^PATCH | cut -d " " -f 3
    head -n 5 Makefile | grep ^SUBLEVEL | cut -d " " -f 3
fi

MAJOR=$(head -n 5 Makefile | grep ^VERSION | cut -d " " -f 3)
MINOR1=$(head -n 5 Makefile | grep ^PATCH | cut -d " " -f 3)
MINOR2=$(head -n 5 Makefile | grep ^SUBLEVEL | cut -d " " -f 3)

KERNEL_REVISION="${MAJOR}.${MINOR1}.${MINOR2}"

echo
echo "Kernel version in present kernel sources tree, per makefile, is ${KERNEL_REVISION}"
echo

exit 0

for file in `ls`; do if [ -h $file ]; then ls -l $file; fi; done

#!/usr/bin

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

# --- EOF ---

# 2020-10-30 FRI - work to configure ssh-agent per gitbash session:

LOCAL_VAR_SSH_AGENT_RUNNING_PROCESS_COUNT=$(ps -u $USERNAME | grep agent | wc | awk '{print $1}')
LOCAL_VAR_SSH_AGENT_VARS_FILENAME="z--ssh-agent-env-vars.txt"

echo "Checking for ssh-agent daemon process:"

if [ $LOCAL_VAR_SSH_AGENT_RUNNING_PROCESS_COUNT -ne 0 ]; then
    echo "Found one or more ssh-agent processes running,"
    if [ -e $LOCAL_VAR_SSH_AGENT_VARS_FILENAME ]; then
        echo "Reading env variables relating to earliest started ssh-agent instance..."
        var1=$(cat $LOCAL_VAR_SSH_AGENT_VARS_FILENAME | sed -n '2p')
        var2=$(cat $LOCAL_VAR_SSH_AGENT_VARS_FILENAME | sed -n '4p')
        echo "exporting $var1 to SSH_AGENT_PID env var..."
        export SSH_AGENT_PID=$var1
        echo "exporting $var2 to SSH_AUTH_SOCK env var..."
        export SSH_AUTH_SOCK=$var2
    else
        echo "but no locally written environment vars found!"
    fi
else
    echo "none found, starting..."
    eval $(/usr/bin/ssh-agent -s)
    /usr/bin/ssh-add $HOME/.ssh/ssh_private_key_for_gitlab
    var3=$(set | grep SSH_AGENT_PID | cut -d'=' -f 2)
    var4=$(set | grep SSH_AUTH_SOCK | cut -d'=' -f 2)
    echo "var3 holds $var3"
    echo "var4 holds $var4"
    echo "Writing these variables to file for future Gitbash shell instances to read..."
    echo $var3 > $LOCAL_VAR_SSH_AGENT_VARS_FILENAME
    echo $var3 >> $LOCAL_VAR_SSH_AGENT_VARS_FILENAME
    echo $var4 >> $LOCAL_VAR_SSH_AGENT_VARS_FILENAME
    echo $var4 >> $LOCAL_VAR_SSH_AGENT_VARS_FILENAME
fi

echo "done."

# EOF ( end of file )

11:03 am - Friday, June 1st, 2018
Tragic Overture, Opus 81
Brahms, Johannes
London Philharmonic Orchestra
Marin Alsop
NAXOS 8.557428 

8:02 am - Monday, July 23rd, 2018
Ein Walzertraum (Waltz Dream)
Straus, Oscar
Cincinnati Pops Orchestra
Erich Kunzel
Telarc 80547

7:50 am - Monday, July 23rd, 2018
Oboe Concerto in C, RV 450
Vivaldi, Antonio
Albrecht Mayer, oboe
I Musici di Roma
DG 002713602

2018-11-26 Monday . . .

5:23 pm - Monday, November 26th, 2018
Five Bagatelles, Opus 47
Dvorak, Antonin
Quartetto Gelato
Linus 270055

8:07 pm - Wednesday, November 28th, 2018
Norfolk Rhapsody No. 1
Vaughan Williams, Ralph
New Philharmonia Orchestra
Adrian Boult
EMI 64022

4:15 pm - Wednesday, December 5th, 2018
Oberon Overture
Weber, Carl Maria Von
Philharmonia Orchestra
Neeme Järvi
Chandos 9066 

2018-12-06 Thursday . . .

11:18 am - Thursday, December 6th, 2018
Violin Concerto in a minor, Opus 82
Glazunov, Alexander
Chloë Hanslip, violin
Swiss Italian Orchestra
Alexander Vedernikov
Hyperion 67940

 7:18 am - Tuesday, December 18th, 2018
 Fantasy on Russian Themes (arr. Kreisler)
 Rimsky-Korsakov, Nikolai
 Itzhak Perlman, violin
 Abbey Road Ensemble
 Lawrence Foster
 EMI 55475

~00:03:20  Deep Focus "Don't Wake Up" +++
~00:06:12  Above and Beyond "Tristate" 5vel remix +++
~00:09:22  Dido and A R Rahman "If I Rise" Enigma Dubz Remix +++
~00:13:26  Tolerance   +++
~00:16:05  Boards of Canada "Olson" +++

 00:32:40  "Liberta"

~01:01:00  +++ 

Tracklist:
Essáy & Stumbleine – Rhiannon
Deep Focus – Don't Wake Up (140 Edit)   +++
Above & Beyond – Tri-State (5vel Remix)   +++
Dido & A.R. Rahman – If I Rise (Enigma Dubz Remix) +++
Tolerance – Dejection +++
Boards Of Canada – Olson (Wrm Remix)
Rameses B – Memoirs (Fracx Remix)
Ed Sheeran – The A Team (KOAN Sound Remix)
Mojo – Garden Walls
Blackmill – Evil Beauty
Loz Contreras – Liberta
Rameses B – North
Lisa Miskovksy – Still Alive (Mt Eden Remix)
Imogen Heap – Headlock (Paper Tigers Remix)
Imogen Heap – Hide & Seek (Enigma Dubz Remix)
William Fitzsimmons – The Tide Pulls From The Moon (JacM Remix)
Barcelona – Please Don't Go (Greg Cooke Remix)
Phaeleh – Afterglow feat. Soundmouse (Akira Kiteshi Remix)
Mario M – EvaC
Phaeleh – Changes feat. Soundmouse
New Look – The Ballad (GZUS Come Out Of The Dark Mix)
Ollie Macfarlane – Shadows
Submerse – Belong
Late – Losing You
Ghosts Of Paraguay – Piano Piece
Kaiori Breathe & Tripwire – I'd Give Anything
Hammock – I Can Almost See You

  Colonel Loud ft. T.I., Young Dolph, Ricco Barrino - California (Official Video)

  songs 5 and 6 excellent

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^ Edit point . . .

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^ bash example: back up multiple MYSQL databases

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^ bash example: list symbolic links in long format

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