In-Depth Series: Bash Scripting

Number of episodes: 57
Open/closed: open
Date of earliest show: 2010-03-24
Date of latest show: 2023-03-13
Series RSS feeds: ogg, spx, mp3

This is an open series in which Hacker Public Radio Listeners can share their Bash scripting knowledge and experience with the community. General programming topics and Bash commands are explored along with some tutorials for the complete novice.

hpr3811 :: mkfifo and named pipes hosted by Klaatu

Released: 2023-03-13. Duration: 00:11:18. Flag: Clean.
Tags: pipe, fifo, mkfifo, Linux, shell.
Have you ever named a pipe? If not, this is the episode you've been waiting for.
Listen in ogg, spx, or mp3 format.

hpr3722 :: Bash snippet - plurals in messages hosted by Dave Morriss

Released: 2022-11-08. Duration: 00:08:33. Flag: Explicit.
Tags: Bash, plural, ngettext.
How to use English singular and plural words in messages
Listen in ogg, spx, or mp3 format.

hpr3713 :: Bash snippet - short-circuit evaluation in Bash Boolean expressions hosted by Dave Morriss

Released: 2022-10-26. Duration: 00:16:40. Flag: Explicit.
Tags: Bash,Boolean expression,short-circuit evaluation.
Found I could do this in Bash, so wanted to share!
Listen in ogg, spx, or mp3 format.

hpr3625 :: Shell Tips and Snippets - Collaborative Effort hosted by Carl

Released: 2022-06-24. Duration: 00:20:25. Flag: Clean.
Tags: shell.
Carl and special guests provide some shell tips and examples.
Listen in ogg, spx, or mp3 format.

hpr3551 :: Bash snippet - some possibly helpful hints hosted by Dave Morriss

Released: 2022-03-14. Duration: 00:24:35. Flag: Explicit.
Tags: Bash,eval,mapfile,environment variables.
Using 'eval', 'mapfile' and environment variables
Listen in ogg, spx, or mp3 format.

hpr3413 :: Bash snippet - using coproc with SQLite hosted by Dave Morriss

Released: 2021-09-01. Duration: 00:45:38. Flag: Explicit.
Tags: Bash,coproc,subshell,coprocess,pipe,file descriptor.
Sending multiple queries to a running instance of sqlite3
Listen in ogg, spx, or mp3 format.

hpr3071 :: Bash snippet - quotes inside quoted strings hosted by Dave Morriss

Released: 2020-05-11. Duration: 00:13:19. Flag: Explicit.
Tags: Bash,quotes.
How to add quotes to quoted strings in Bash
Listen in ogg, spx, or mp3 format.

hpr3013 :: Bash Tips - 21 hosted by Dave Morriss

Released: 2020-02-19. Duration: 00:41:37. Flag: Explicit.
Tags: Bash,variable,environment,environment variable.
Environment variables
Listen in ogg, spx, or mp3 format.

hpr2877 :: Using Zenity with Pdmenu hosted by Dave Morriss

Released: 2019-08-13. Duration: 00:22:38. Flag: Explicit.
Tags: zenity,Bash scripting,pdmenu,GTK+.
Zenity is a rather cool program that will display GTK+ dialogs from a script
Listen in ogg, spx, or mp3 format.

hpr2807 :: Are bash local variables local? hosted by clacke

Released: 2019-05-07. Duration: 00:11:01. Flag: Clean.
Tags: bash, perl, scope, dynamic scope, lexical scope.
A lesson on dynamic scope vs lexical scope
Listen in ogg, spx, or mp3 format.

hpr2793 :: bash coproc: the future (2009) is here hosted by clacke

Released: 2019-04-17. Duration: 00:21:16. Flag: Clean.
Tags: bash, coproc, subshell.
clacke discovers bash's coproc keyword and explains some toy examples
Listen in ogg, spx, or mp3 format.

hpr2756 :: Bash Tips - 20 hosted by Dave Morriss

Released: 2019-02-25. Duration: 00:32:35. Flag: Explicit.
Tags: Bash,array,delete,positional parameters.
Deleting arrays; positional and special parameters in Bash
Listen in ogg, spx, or mp3 format.

hpr2739 :: Bash Tips - 19 hosted by Dave Morriss

Released: 2019-01-31. Duration: 00:25:53. Flag: Explicit.
Tags: Bash,array,declare,typeset,local,readonly,read,mapfile,readarray.
Arrays in Bash (part 4)
Listen in ogg, spx, or mp3 format.

hpr2736 :: Response to show 2720 hosted by Dave Morriss

Released: 2019-01-28. Duration: 00:18:24. Flag: Explicit.
Tags: Bash,ShellCheck.
Some suggestions on how to improve a Bash script
Listen in ogg, spx, or mp3 format.

hpr2729 :: Bash Tips - 18 hosted by Dave Morriss

Released: 2019-01-17. Duration: 00:31:38. Flag: Explicit.
Tags: Bash,array,indexed array,associative array,parameter expansion.
Arrays in Bash (part 3)
Listen in ogg, spx, or mp3 format.

hpr2719 :: Bash Tips - 17 hosted by Dave Morriss

Released: 2019-01-03. Duration: 00:34:16. Flag: Explicit.
Tags: Bash,array,indexed array,associative array.
Arrays in Bash (part 2)
Listen in ogg, spx, or mp3 format.

hpr2709 :: Bash Tips - 16 hosted by Dave Morriss

Released: 2018-12-20. Duration: 00:24:00. Flag: Explicit.
Tags: Bash,array,indexed array,associative array.
Arrays in Bash (part 1)
Listen in ogg, spx, or mp3 format.

hpr2699 :: Bash Tips - 15 hosted by Dave Morriss

Released: 2018-12-06. Duration: 00:29:54. Flag: Explicit.
Tags: Bash,loop,ls,pipe,pipeline,find,extglob.
Some of the pitfalls when using loops in Bash
Listen in ogg, spx, or mp3 format.

hpr2689 :: Bash Tips - 14 hosted by Dave Morriss

Released: 2018-11-22. Duration: 00:28:08. Flag: Explicit.
Tags: Bash,loop,for,break,continue.
More about loops - the 'for' loop, 'break' and 'continue'
Listen in ogg, spx, or mp3 format.

hpr2679 :: Extra ancillary Bash tips - 13 hosted by Dave Morriss

Released: 2018-11-08. Duration: 00:36:42. Flag: Explicit.
Tags: Bash,extended test,regular expression,capture group,BASH_REMATCH,back reference.
Making decisions in Bash (part 5)
Listen in ogg, spx, or mp3 format.

hpr2669 :: Additional ancillary Bash tips - 12 hosted by Dave Morriss

Released: 2018-10-25. Duration: 00:28:22. Flag: Explicit.
Tags: Bash,test,regular expression.
Making decisions in Bash (part 4)
Listen in ogg, spx, or mp3 format.

hpr2659 :: Further ancillary Bash tips - 11 hosted by Dave Morriss

Released: 2018-10-11. Duration: 00:28:22. Flag: Explicit.
Tags: Bash,test,conditional expression,string comparison,pattern.
Making decisions in Bash (part 3)
Listen in ogg, spx, or mp3 format.

hpr2649 :: More ancillary Bash tips - 10 hosted by Dave Morriss

Released: 2018-09-27. Duration: 00:22:52. Flag: Explicit.
Tags: Bash,test,while,until,if,case.
Making decisions in Bash (part 2)
Listen in ogg, spx, or mp3 format.

hpr2639 :: Some ancillary Bash tips - 9 hosted by Dave Morriss

Released: 2018-09-13. Duration: 00:21:45. Flag: Explicit.
Tags: Bash,test,true,false.
Making decisions in Bash (part 1)
Listen in ogg, spx, or mp3 format.

hpr2496 :: Making a Raspberry Pi inventory hosted by Dave Morriss

Released: 2018-02-26. Duration: 00:11:10. Flag: Explicit.
Tags: Raspberry Pi, RPi.
How to collect identifying information about RPi devices
Listen in ogg, spx, or mp3 format.

hpr2483 :: Useful Bash functions - part 4 hosted by Dave Morriss

Released: 2018-02-07. Duration: 00:39:46. Flag: Explicit.
Tags: coding,Bash,script,function.
A Bash function for parsing lists of numbers and ranges
Listen in ogg, spx, or mp3 format.

hpr2469 :: A flight itinerary in Bash hosted by Dave Morriss

Released: 2018-01-18. Duration: 00:17:45. Flag: Explicit.
Tags: Bash,date,ISO 8601,epoch.
Working out dates and times in a Bash script
Listen in ogg, spx, or mp3 format.

hpr2448 :: Useful Bash functions - part 3 hosted by Dave Morriss

Released: 2017-12-20. Duration: 00:33:53. Flag: Explicit.
Tags: coding,Bash,script,function.
A few more possibly useful Bash functions are discussed
Listen in ogg, spx, or mp3 format.

hpr2349 :: Customizing my bash prompt hosted by Windigo

Released: 2017-08-03. Duration: 00:24:12. Flag: Explicit.
Tags: bash,command line,configuration,terminal.
A detailed look into how, and why, to customize a bash prompt.
Listen in ogg, spx, or mp3 format.

hpr2317 :: Bash snippet - extglob and scp hosted by Dave Morriss

Released: 2017-06-20. Duration: 00:28:27. Flag: Explicit.
Tags: Bash,shopt,filename expansion,scp,rsync.
How does scp manage extended glob patterns?
Listen in ogg, spx, or mp3 format.

hpr2302 :: Bash snippet - nullglob hosted by Dave Morriss

Released: 2017-05-30. Duration: 00:07:08. Flag: Explicit.
Tags: Bash,shopt,filename expansion.
After learning about the nullglob option I have started to use it
Listen in ogg, spx, or mp3 format.

hpr2293 :: More supplementary Bash tips hosted by Dave Morriss

Released: 2017-05-17. Duration: 00:38:25. Flag: Explicit.
Tags: Bash, expansion, filename expansion, extglob, extended pattern matching.
Finishing off the subject of expansion in Bash (part 2)
Listen in ogg, spx, or mp3 format.

hpr2278 :: Some supplementary Bash tips hosted by Dave Morriss

Released: 2017-04-26. Duration: 00:39:35. Flag: Explicit.
Tags: Bash,expansion,pathname expansion,shopt.
Finishing off the subject of expansion in Bash (part 1)
Listen in ogg, spx, or mp3 format.

hpr2135 :: Audio speedup script hosted by Dave Morriss

Released: 2016-10-07. Duration: 00:27:59. Flag: Explicit.
Tags: bash,sox,speed.
I want to speed up some of my podcasts and truncate silence in them too so I wrote a script to do it
Listen in ogg, spx, or mp3 format.

hpr2096 :: Useful Bash functions - part 2 hosted by Dave Morriss

Released: 2016-08-15. Duration: 00:23:21. Flag: Explicit.
Tags: coding,Bash,script,function.
The further development of a Bash function that may be of use in your scripts
Listen in ogg, spx, or mp3 format.

hpr2045 :: Some other Bash tips hosted by Dave Morriss

Released: 2016-06-03. Duration: 00:55:53. Flag: Explicit.
Tags: Bash,expansion,process substitution, word splitting.
Yet more information about types of expansion in Bash
Listen in ogg, spx, or mp3 format.

hpr2003 :: Using the Incron file watching daemon hosted by b-yeezi

Released: 2016-04-06. Duration: 00:11:38. Flag: Explicit.
Tags: incron,bash,watcher,daemon.
I briefly introduce the incron file watching daemon, and give an example of how I use it.
Listen in ogg, spx, or mp3 format.

hpr1990 :: Pomodoro Timer - The Evolution of a Script part deux hosted by Nacho Jordi

Released: 2016-03-18. Duration: 00:28:54. Flag: Clean.
Tags: Productivity, Bash basics, Programming design, Pomodoro, Timer, loops, sleep.
Further evolutions of a pomodoro script that got a life of its own
Listen in ogg, spx, or mp3 format.

hpr1987 :: Pomodoro Timer - The Evolution of a Script (pt 1) hosted by Nacho Jordi

Released: 2016-03-15. Duration: 00:22:07. Flag: Clean.
Tags: Productivity, Bash basics, Programming design, Pomodoro, Timer, loops, sleep.
The different stages of a bash script that was created accidentally
Listen in ogg, spx, or mp3 format.

hpr1952 :: Time now Ladies and Gents hosted by Ken Fallon

Released: 2016-01-26. Duration: 00:31:00. Flag: Clean.
Tags: fix_tags,ffprobe,ffmpeg,bc,sed,awk,grep,time,iso8601,date,mediainfo,xmlstarlet.
How to get the total duration of a lot of media files.
Listen in ogg, spx, or mp3 format.

hpr1951 :: Some additional Bash tips hosted by Dave Morriss

Released: 2016-01-25. Duration: 00:40:24. Flag: Explicit.
Tags: Bash,expansion,arithmetic expansion,shell arithmetic,number base.
More about expansion in Bash: this time arithmetic expansion
Listen in ogg, spx, or mp3 format.

hpr1903 :: Some further Bash tips hosted by Dave Morriss

Released: 2015-11-18. Duration: 00:29:18. Flag: Explicit.
Tags: Bash,expansion,tilde expansion,command substitution.
Some more information about types of expansion in Bash
Listen in ogg, spx, or mp3 format.

hpr1884 :: Some more Bash tips hosted by Dave Morriss

Released: 2015-10-22. Duration: 00:15:49. Flag: Explicit.
Tags: Bash,brace expansion,seq.
Some information about brace expansion in Bash that you might not know
Listen in ogg, spx, or mp3 format.

hpr1843 :: Some Bash tips hosted by Dave Morriss

Released: 2015-08-26. Duration: 00:21:17. Flag: Explicit.
Tags: Bash,pushd,popd,dirs.
A few useful Bash features that may not be well known
Listen in ogg, spx, or mp3 format.

hpr1838 :: Waking up with Windigo hosted by Windigo

Released: 2015-08-19. Duration: 00:15:25. Flag: Clean.
Tags: bash, scripting, terrible.
An overview of a terrible, hacky method of waking up.
Listen in ogg, spx, or mp3 format.

hpr1791 :: Organizing Photos with Bash hosted by Tony Pelaez

Released: 2015-06-15. Duration: 00:31:15. Flag: Explicit.
Tags: bash, photography, automation.
Use bash to simplify the process of organizing and backing up photographs.
Listen in ogg, spx, or mp3 format.

hpr1757 :: Useful Bash functions hosted by Dave Morriss

Released: 2015-04-28. Duration: 00:27:42. Flag: Explicit.
Tags: coding,Bash,script,function.
Some Bash functions that may be of use in your scripts
Listen in ogg, spx, or mp3 format.

hpr1710 :: Windows Remote Desktop on GNU/Linux hosted by Ken Fallon

Released: 2015-02-20. Duration: 00:11:19. Flag: Clean.
Tags: bash,xfreerdp,rdesktop,remmina.
A wrapper script for xfreerdp to make connecting to windows servers painless
Listen in ogg, spx, or mp3 format.

hpr1648 :: Bash parameter manipulation hosted by Dave Morriss

Released: 2014-11-26. Duration: 00:40:33. Flag: Explicit.
Tags: Bash,script,parameter,variable.
A summary and aide memoire of Bash parameter expansion methods
Listen in ogg, spx, or mp3 format.

hpr1430 :: thebestofyoutube.com download script hosted by Ken Fallon

Released: 2014-01-24. Duration: 00:38:32. Flag: Explicit.
Tags: Bash,YouTube,download.
A hacked script to download youtube videos
Listen in ogg, spx, or mp3 format.

hpr1247 :: Recording Terrestrial Radio with bash scripts and cron jobs hosted by Jon Kulp

Released: 2013-05-14. Duration: 00:14:36. Flag: Explicit.
Tags: bash,scripting,radio,streamripper,simple audio player.
Using a Bash script to capture terrestrial radio
Listen in ogg, spx, or mp3 format.

hpr1204 :: My Magnatune Downloader hosted by Dave Morriss

Released: 2013-03-14. Duration: 00:21:59. Flag: Explicit.
Tags: Magnatune,API,Bash,XML,XSLT,xsltproc.
How I download albums from Magnatune with Bash and Perl scripts
Listen in ogg, spx, or mp3 format.

hpr1197 :: What I do with bash scripts hosted by Jon Kulp

Released: 2013-03-05. Duration: 00:27:18. Flag: Explicit.
Tags: Bash,scripting .
Some personal anecdotes on writing Bash scripts
Listen in ogg, spx, or mp3 format.

hpr0598 :: Bash Scripting: Episode 2 Command Line Basics hosted by Ken Fallon

Released: 2010-11-17. Duration: 00:38:33. Flag: Explicit.
Tags: bash,cli,"command line".
Introduction to the man, info, and appropos commands, among other basics
Listen in ogg, spx, or mp3 format.

hpr0562 :: Introduction to bash scripting hosted by Ken Fallon

Released: 2010-08-11. Duration: 00:20:32. Flag: Explicit.
Tags: bash,"bash basics","bash scripting".
Introduction to bash scripting, with quick explanations of many adjacent concepts
Listen in ogg, spx, or mp3 format.

hpr0543 :: Xoke's Podcasting Script hosted by Xoke

Released: 2010-05-24. Duration: 00:08:55. Flag: Explicit.
Tags: shell,scripts,scripting,bash.
An introduction to a script for recording podcasts
Listen in ogg, spx, or mp3 format.

hpr0531 :: bash loops hosted by Ken Fallon

Released: 2010-03-24. Duration: 00:08:32. Flag: Explicit.
Tags: bash,loops,while loops,for loops,scripting,bash scripting.
While aboard an Airbus 320, Ken Fallon describes loops that are available in BASH
Listen in ogg, spx, or mp3 format.