#shellscripting — Public Fediverse posts

Wrote a #shell function without using ls inside of $( ), so my inner @mirabilos won't harass me. XD

#slightly easier wireguard command
function wg {
    local dir file profile profiledir= parm=${1:-} statustext
    #Find profile dir
    for dir in {,/usr/local}/etc/wireguard; do
        if [[ -d $dir ]]; then
            profiledir=$dir
            break
        fi
    done
    #Find config file
    if [[ -n $profiledir ]]; then
        for file in $profiledir/*.conf; do
            if [[ -e $file ]]; then
                profile=${file//*\/}
                profile=${profile/.conf}
                break
            fi
        done
    fi
    [[ -n $profile ]] || profile=proton
    statustext="wireguard profile $profile"
    case ${parm,,} in
        up|on)      doas wg-quick  up  $profile;;
        down|off)   doas wg-quick down $profile;;
        status)     echo -en "$statustext _______\r"
                    echo -en "$statustext "
                    ifconfig |grep -q "^$profile:" && echo enabled || echo disabled;;
        *)          warn "wg usage: wg up|down|status";;
    esac
}

Hmm, seems ${foo,,} for lower case conversion is #bash-only. I wonder if I should use tr instead.

#Unix #UnixShell #ShellScript #ShellScripting

Recursion usually scares me a bit, but it worked out nicely here:

#convert "cx"-style Esperanto notation to native accents (ĉ)
function eaccent {
    if [[ ${1:-} ]]; then
        echo "$*" |eaccent
    else
        sed 's/cx/ĉ/g; s/gx/ĝ/g; s/hx/ĥ/g; s/jx/ĵ/g; s/sx/ŝ/g; s/ux/ŭ/g; s/C[xX]/Ĉ/g; s/G[xX]/Ĝ/g; s/H[xX]/Ĥ/g; s/J[xX]/Ĵ/g; s/S[xX]/Ŝ/g; s/U[xX]/Ŭ/g'
    fi
}

#bash #unix #shell #scripts #scripting #UnixShell #ShellScripting #Esperanto

🐢💤 Behold the revolutionary art of making Git diffs more complex than assembling IKEA furniture! All you need is #Delta, #fzf, a sprinkle of shell scripting, and the willingness to never see the sunlight again. Truly, the pinnacle of productivity hacks for those with too much time on their hands! 🙄🔧
https://nickjanetakis.com/blog/awesome-git-diffs-with-delta-fzf-and-a-little-shell-scripting #GitDiffs #ProductivityHacks #ShellScripting #TechHumor #HackerNews #ngated

Improved Git Diffs with Delta, Fzf and a Little Shell Scripting

https://nickjanetakis.com/blog/awesome-git-diffs-with-delta-fzf-and-a-little-shell-scripting

#HackerNews #ImprovedGitDiffs #Delta #Fzf #ShellScripting #GitTips

TL;DW for the video:

Lock Fix: Detects/removes stale db.lck.

PGP Engine: Auto-fetches missing keys.

Wiki Deep-link: [w] opens the specific Wiki page for the error.

Smart Search: Finds package owners for missing binaries.

Repo: https://github.com/Rakosn1cek/mend (2/2)

#ShellScripting #ArchLinux #Dotfiles #DevLog

Bash expansion explained for beginners. Learn brace, tilde, parameter, command, arithmetic, process, globbing, word splitting, and quote removal with practical examples.

Full guide here: https://ostechnix.com/bash-expansion-beginners-guide/

#BashExpansion #Bash #ShellScripting #Linux #Linuxhowto

Here's a little puzzle for you. Can you figure out the purpose of this one-off shell script I just wrote?
If you post an answer put it behind a CW so you don't spoil it for others!
#programming #scripting #shellScript #shellScripting #Linux

Am I the only one that never, ever uses getopt/getops in shell scripts?

Just writing your own argument parser seems so much easier to do. :/

#Unix #shell #bash #ShellScripts #ShellScripting

Se vienen cositas próximamente en el blog y en el canal de YouTube 💪

Intentando aclarar algunos conceptos fundamentales de SSH para poder utilizarlo como un pro y no morir en el intento 🚀

¿Todavía no nos siguen? 👇

▶️ https://www.youtube.com/juncotic?sub_confirmation=1

📚 https://juncotic.com/blog

🎓 https://juncotic.com/cursos

¡Los esperamos para seguir aprendiendo juntos!

#gnu #linux #ssh #curso #firewall #iptables #nftables #wireshark #redes #tcpip #ciberseguridad #python #flask #shellscripting #juncotic

Shell Scripting in 20 Minutes – Crash Course | In One Video for Beginners | MPrashant

linux #mprashant #shellscripting #linuxtutorial Hello Dosto: In this video I have covered all the Shell Scripting Concept in just 1 ... source

https://quadexcel.com/wp/shell-scripting-in-20-minutes-crash-course-in-one-video-for-beginners-mprashant/

Bash turns 38 today! Celebrate Bash's 38th birthday with 38 built-in features and essential tips. Learn keyboard shortcuts, parameter expansion, conditionals & more.

Full guide here: https://ostechnix.com/38-bash-tips-shell-features/

#Bash #Shell #Bash38 #Linux #Bashtips #Shelltips #Shellscripting #Linuxhowto #Linuxbasics #Linuxcommands

12 Days of Shell

https://12days.cmdchallenge.com

#HackerNews #12DaysOfShell #ShellScripting #CMDChallenge #TechChallenge #CodingFun

#PSA regarding #GNU #coreutils #sort's unexpected or at least non-intuïtive behaviour of its --unique (-u) option together with --numeric (-n) or --human (-h).

The output of piping something through

sort -nu

might not be equal to the output of piping the same thing through

sort -n | uniq

as it might miss some lines completely. 🤌

And it's NOT documented in the man page, just in the info page.

Related bug reports:

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=61696
https://bugs.debian.org/893524

#WTF #CLI #Shellscripting

A Lisp Interpreter for Shell Scripting

https://github.com/gue-ni/redstart

#HackerNews #Lisp #Interpreter #ShellScripting #Programming #GitHub #Redstart

🧹 Tidying Up After Myself: Automatically Deleting Old GitHub Issues

https://amedee.be/%f0%9f%a7%b9-tidying-up-after-myself-automatically-deleting-old-github-issues/

Building off of what we learned at #Macstock2025 from @TheMikeBurke, I automated building new project folders using shell scripting and Keyboard Maestro. I had more fun doing that than starting my ScreenCastsONLINE project. Don't tell @leegarrett

https://www.podfeet.com/blog/2025/08/automation-project-folders/

#Automation #ShellScripting #KeyboardMaestro

Shell two-liner to watch your phone battery via KDE Connect while charging (or discharging):

alias kcbatt='qdbus6 org.kde.kdeconnect /modules/kdeconnect/devices/$(grep -Em1 "^\[[0-9a-f_]+\]" ~/.config/kdeconnect/trusted_devices |tr -dc 0-9a-f_)/battery org.kde.kdeconnect.device.battery.charge'

ob=0; while b=$(kcbatt); do if ((ob!=b)); then date "+%H:%M $b%%"; ob="$b"; fi; sleep 5; done

#KDE #KDEConnect #ShellScripting #OneLiner #Useful

Shell two-liner to watch your phone battery via KDE Connect while charging (or discharging):

alias kcbatt='qdbus6 org.kde.kdeconnect /modules/kdeconnect/devices/$(grep -Em1 "^\[[0-9a-f_]+\]" ~/.config/kdeconnect/trusted_devices |tr -dc 0-9a-f_)/battery org.kde.kdeconnect.device.battery.charge'

ob=0; while b=$(kcbatt); do if ((ob!=b)); then date "+%H:%M $b%%"; ob="$b"; fi; sleep 5; done

#KDE #KDEConnect #ShellScripting #OneLiner #Useful

Shell two-liner to watch your phone battery via KDE Connect while charging (or discharging):

alias kcbatt='qdbus6 org.kde.kdeconnect /modules/kdeconnect/devices/$(grep -Em1 "^\[[0-9a-f_]+\]" ~/.config/kdeconnect/trusted_devices |tr -dc 0-9a-f_)/battery org.kde.kdeconnect.device.battery.charge'

ob=0; while b=$(kcbatt); do if ((ob!=b)); then date "+%H:%M $b%%"; ob="$b"; fi; sleep 5; done

#KDE #KDEConnect #ShellScripting #OneLiner #Useful

In the helpful shell functions department:

(Requires bc to be installed)

load() {
    local load=$(uptime |sed -E "s/^.*load averages?: //; s/,.*$//")
    local uname="$(uname)"
    local cpus
    if [[ $1 == -q ]]; then
        echo "$load"
    elif [[ $1 == -i ]]; then
        echo "$load + 0.5" |bc -l |cut -f1 -d.
    else
        case "$uname" in
            Linux)  cpus=$(grep -c ^processor /proc/cpuinfo);;
            *BSD)   cpus=$(sysctl hw.ncpu |tr -dc "0-9\n");;
            *)      warn "load(): assuming 1 cpu, don't know how to get the number in \"$uname\""
                    cpus=1;;
        esac
        local loadPerCPU=$(echo "scale=3; $load / $cpus" |bc -l |sed 's/^\./0./')
        echo "$load ($loadPerCPU per processor ($cpus))"
    fi
}

#ShellScripting #UnixShell #ShellScripts #bash #ksh #sh

#Poll: Curious about people's attitudes towards shell scripting.

Two part question:

1. Are you a DEVeloper (or working in a development-heavy role), OTHER-IT worker (such as a sysadmin, architect, anything in a non-development-heavy role), or NON-IT (accountant, doctor, whatever)
2. Do you HATE shell scripting, are you INDIFferent towards (or ignorant of) shell scripting, or do you LOVE it?

#Unix #UnixShell #ShellScript #ShellScripting #POSIX #PosixShell #sh #bash #zsh #csh #tcsh #ksh #pdksh #oksh #mksh

New #blog post: Gathering Hashtags from the Fediverse

https://rldane.space/gathering-hashtags-from-the-fediverse.html

282 words (2233 counting the hashtags, but that's just silly)

cc: my wonderful #chorus: @joel @dm @sotolf @thedoctor @pixx @twizzay @orbitalmartian @adamsdesk @krafter @roguefoam @clayton @giantspacesquid

(I will happily add/remove you from the chorus upon request! :)

#100DaysToOffload #27

#rlDaneWriting #hashtags #bash #OneLiner #OneLiners #ShellScripting #Fediverse #API

I'm exploring ways to improve audio preprocessing for speech recognition for my [midi2hamlib](https://github.com/DO9RE/midi2hamlib) project. Do any of my followers have expertise with **SoX** or **speech recognition**? Specifically, I’m seeking advice on: 1️⃣ Best practices for audio preparation for speech recognition. 2️⃣ SoX command-line parameters that can optimize audio during recording or playback.
https://github.com/DO9RE/midi2hamlib/blob/main/tests/speech_menu.sh #SoX #SpeechRecognition #OpenSource #AudioProcessing #ShellScripting #Sphinx #PocketSphinx #Audio Retoot appreciated.

🧱 The Three Tiers of the Linux Mind: A DeadSwitch Whisper for New Sysadmins #Linux #SysadminLife #OpenSource #CommandLine #DeadSwitch #LearnLinux #LinuxBasics #Cybersecurity #ShellScripting #TomITCafe #LinuxAdmin #TieredLearning #FOSS #DigitalResistance

http://tomsitcafe.com/2025/04/20/%f0%9f%a7%b1-the-three-tiers-of-the-linux-mind-a-deadswitch-whisper-for-new-sysadmins/

Gotta say, I wish #bash had local / lexically-scoped functions, rather than having to rely on hacks like:

function widget {
    function ___widget_parse {
        ...
    }
    ...
    unset ___widget_parse
}

Something like this (which does not currently work) would be lovely:

function widget {
    local function parse {
        ...
    }
}

#ShellScript #ShellScripts #ShellScripting

If you're a #Linux person and using the command "ps" with options like "aux" instead of e.g. "-e" (i.e. options without leading "-"), you likely learned the #Unix #commandline on #BSD or maybe SunOS 🧔. (Or by someone who grew up with them. 🙂)

In other news: #TIL that (in either variant) the option "j" (e.g. as "ps ajx" or "ps -ej") also shows the PPID (parent PID, only with BSD style options), PGID (process group ID) und SID (session ID).

#cli #commandlinemagic #ps #shellscripting

Pnut: A Self-Compiling C Transpiler Targeting Human-Readable POSIX Shell https://hackaday.com/2024/07/25/pnut-a-self-compiling-c-transpiler-targeting-human-readable-posix-shell/ #SoftwareDevelopment #shellscripting #transpiler

Pnut: A Self-Compiling C Transpiler Targeting Human-Readable POSIX Shell - Shell scripting is one of those skills that are absolutely invaluable on especiall... - https://hackaday.com/2024/07/25/pnut-a-self-compiling-c-transpiler-targeting-human-readable-posix-shell/ #softwaredevelopment #shellscripting #transpiler

Hey #AskFedi (#Linux / #UNIX / #BSD users in particular),

Does anyone have a preferred front-end to keepassxc-cli? I know there's a rofi interface shell script, but I honestly found it kind of clunky.

This is something that could be very easily and nicely shell scripted, and I wanted to ask if anyone knows of one out there already before I re-invented the wheel.

#Keepass #KeepassXC #ShellScripting #ShellScript #ShellScripts

#nano #bash #shellscript #shellscripting #ShellScripts #development

I spent too long doing this 😓

#Pokemon #bashrc #fish_greeting #fish #shell #shellScripting #scripting #pokeget #fastfetch #neofetch #screenshot #rice #linuxscreenshot

I've recorded a screencast for my old bash script alltests — test runner for competitive programming. It runs an executable against set of static tests (sample inputs and outputs).

#asciinema #competitiveProgramming #bash #ShellScripting #utility #testing

While I've been waiting on packages to compile for ELFS I've been playing with xonsh in between builds.

Xonsh is a python-powered shell. I don't often use python, but have started growing a liking to it with xonsh.

It's got some pretty neat features and expands the capabilities of a traditional shell greatly.

What stood out to me the most is the fact that the PATH environment variable is an array and not a string. This is a quirk I've only ever seen in the rc shell from Plan 9. It's actually a really good quirk too! This feature actually makes it easier to script and manipulate the PATH variable in many ways.

While my demonstration is not particularly impressive I think it's kinda neat how python and shell are intertwined in such a nice way.

#python #shellscripting #shell #elfs #xonsh #linux #linuxengineer

Searching for "New York" followed by one or more capitalised words ... and massaging the resulting data a bit, results in the following list of New York institutions and/or aspects which receive mention at HN:

  96  New York Times
  51  New York City
  25  New York
   5  New York State
   4  New York Public Library
   3  New York City Subway
   2  New York Harbor
   2  New York Subway
   2  New York Times Magazine
   1  New York Attorney General
   1  New York Charity
   1  New York City Campus
   1  New York Fed
   1  New York Libraries
   1  New York Magazine
   1  New York Police
   1  New York Post
   1  New York Region
   1  New York Senate

Note that the 3rd entry, "New York" is itself ambiguous, and can refer to the city, state, or metro region, amongst others.

A handy reminder that language is itself ambiguous and provides a useful but not precise mechanism for transferring meaning or understanding (or sometimes ambiguity and confusion) between entities.

#HN #HackerNews #DataAnalysis #ShellScripting #GlobalCities #MediaAnalysis

HN Front Page / Global Cities Mentions

One question I've had about HN is how well or poorly it represents non-US (or even non-Silicon Valley) viewpoints and issues.

Pulling from the Globalization and World Cities Research Network list, the top 50 global cities names appearing in HN front-page titles:

  1   191  San Francisco
  2   164  London
  3   117  Boston
  4    86  Seattle
  5    60  Tokyo
  6    58  Paris
  7    56  Chicago
  8    56  Hong Kong
  9    55  New York City
 10    50  Berlin
 11    50  Phoenix
 12    45  Rome
 13    40  Detroit
 14    36  Singapore
 15    31  Vancouver
 16    30  Los Angeles
 17    27  Austin
 18    23  Beijing
 19    20  Dubai
 20    19  Shenzhen
 21    19  Toronto
 22    17  Amsterdam
 23    16  Copenhagen
 24    16  Houston
 25    16  Moscow
 26    15  Atlanta
 27    14  Barcelona
 28    14  Denver
 29    13  Baltimore
 30    13  San Jose
 31    13  Stockholm
 32    12  San Diego
 33    12  Sydney
 34    11  Cairo
 35    10  Munich
 36    10  Wuhan
 37     9  Helsinki
 38     9  Miami
 39     9  Mumbai
 40     9  Philadelphia
 41     9  Shanghai
 42     9  Vienna
 43     8  Montreal
 44     7  Beirut
 45     7  Dublin
 46     7  Istanbul
 47     6  Bangalore
 48     6  Dallas
 49     6  Kansas City
 50     6  Minneapolis

(Best viewed in original on toot.cat.)

Note that some idiosyncrasies affect this, e.g., "New York City" appears rarely, whilst "New York" may refer to the city, state, any of several newspapers, universities, etc. "New York" appears 315 times in titles (mostly as "New York Times").

I've independently verified that, for example, "Ho Chi Minh City" doesn't appear, though "Ho Chi Minh" alone does:

https://news.ycombinator.com/item?id=15374051, on the 2017-9-30 front page: https://news.ycombinator.com/front?day=2017-09-30

So apply salt liberally.

Edits: tyops & speling.

#HN #HackerNews #DataAnalysis #ShellScripting #GlobalCities #MediaAnalysis

I wrote a script to resolve lists of domains from stdin, since dnsx and the like does not like my VPN settings.

(feedback appreciated - Bash noob)

https://github.com/n0kovo/dnsplz

#BugBounty #DNS #DnsRecon #Bash #ShellScript #ShellScripting #BashScript #Enumeration #DnsEnumeration #InfoSec

#UOMF: #Logging With #Emacs #OrgMode
https://karl-voit.at/2020/01/01/appendorgheading/

#publicvoit #PIM #shellscript #ShellScripting #Linux #cron #cronjob

Bash Scripting - Printf Command Explained With Examples #Printf #BashScripting #Bash #ShellScripting #Commandline #CLI #Linux #Linuxbasics #Linuxcommands #Bashtutorial #Linuxhowto
https://ostechnix.com/bash-printf-command/

Bash Scripting - While & Until Loop Explained With Examples #BashLoops #WhileLoop #UntilLoop #BashScripting #ShellScripting #Bash #Linux #Linuxhowto
https://ostechnix.com/bash-while-until-loop-shell-scripting/

Bash Heredoc Tutorial For beginners #Heredoc #HereDocuments #Bash #BashRedirection #Shell #ShellScripting #Script #Linux #Linuxhowto #Bashtips #Commandline #CLI
https://ostechnix.com/bash-heredoc-tutorial/

Linux Fu: Leaning Down with exec - Shell scripting is handy and with a shell like bash it is very capable, too. However, shell scriptin... more: https://hackaday.com/2019/12/30/linux-fu-leaning-down-with-exec/ #hackadaycolumns #shellscripting #linuxhacks #linuxfu #skills #linux #bash #exec