Source: https://www.ubuntupit.com/simple-yet-effective-linux-shell-script-examples/
- Hello World
- Using echo to Print
- Using Comments
- Multi-line comments
- The While Loop
- The For Loop
- Receive Input from User
- The If Statement
- More Control Using If Else
- Using the AND Operator
- Using the OR Operator
- Using Elif
- The Switch Construct
- Command Line Arguments
- Getting Arguments with Names
- Concatenating Strings
- Extracting Substrings Using Cut
- Adding Two Values
- Adding Multiple Values
- Functions in Bash
- Functions with Return Values
- Creating Directories from Bash Scripts
- Create a Directory after Confirming Existence
- Reading Files
- Deleting Files
- Appending to Files
- Test File Existence
- Send Mails from Shell Scripts
- Parsing Date and Time
- The Sleep Command
- The Wait Command
- Displaying the Last Updated File
- Adding Batch Extensions
- Print Number of Files or Directories
- Cleaning Log Files
- Backup Script Using Bash
- Check Whether You’re Root
- Removing Duplicate Lines from Files
- System Maintenance
| Filename | what it does |
| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| alsa-info.sh | Third-party. Dump your alsa configuration for easier debugging. |
| ansi2html.sh | Third-party. pipe your colored shell output and get HTML out |
| archive-repo | helper script to archive a repo on GitHub by pushing it to an orphan branch |
| audible-strip-drm | Strip Audible DRM from all Audible-MP4 files in the current directory |
| aur.sh | dumb AUR helper, for when you don't have yay installed yet |
| avi2gif | convert an AVI file to a GIF at 10FPS. High quality |
| backlight | change keyboard brightness for laptops. |
| blacklist2hosts.php | convert a blacklist file (list of hosts) to a /etc/hosts format file with 0.0.0.0 prepended |
| bluetooth-pan.sh | Run PAN on a specific bluetooth device. |
| brightness.sh | change display brightness. Works primarily on laptops |
| byzanz-record-region.sh | Third-party. Select a screen region and record it using byzanz |
| byzanz-record-window.sh | Third-party. Select a window and record it using byzanz |
| calibre_cleanup.php | Old cleanup script for fixing namespace in EPUBs that won't open on my iPad |
| cbr2pdf | Change a CBR(Comic Book RAR archive) to a PDF |
| cbz2pdf | Change a CBZ(Comic Book ZIP archive) to a PDF |
| cbz-convertor.sh | Same as cbz.sh but also syncs them somewhere |
| cbz.sh | Zips given directories into .cbz (Comic Book ZIP) archives of the smame name (eg "folder name.cbz"). |
| ccg | Third-party. Generate a control graph from a PHP codebase |
| changed.sh | Search whole filesystem for changed files in the last $1 minutes |
| convertSTL.rb | Third-party. STL files support binary and ascii encodings. This helps convert b/w them |
| cpw | Third-party. build an array of all cpw procs for this user that aren't this one. |
| cwdterm.sh | Picks a sensible-terminal, used by i3. Currently forces alacritty. |
| djvu2pdf | Third-party. Convert a DJVU file to PDF |
| do-common.sh | Run S3 commands against Digital Ocean. Unfinished |
| do-get@ | Run S3 commands against Digital Ocean. Symlink to do-common. Idea was to switch like how busybox does |
| dydns.sh | I like my local system IP address (192.168.1.*) to be accessible over the network using https://me.captnemo.in. This updates the DNS server by making an API request to CloudFlare. |
| emojify | Third-party. Substitutes emoji aliases (like 💖) to emoji raw characters. |
| epub2mobi.sh | Convert all EPUB files in a directory recursively to MOBI using ebook-convert |
| extract_uimage.sh | Third-party. Extract contents from a uImage, which is the compressed linux kernel format. |
| flac2mp3 | Convert all flac files to mp3 in current directory in parallel using ffmpeg |
| frak | Generates a regex from a given input file containing all possible matches using the frak NPM package. |
| get_current_track.py | Gets my current playing track from /tmp/lastfm.html (which was updated with cron) or the cmus-now-playing status file, whichever existed. Unused now |
| get-current-track.sh | Same, but in Bash |
| ghissues2csv | Exports issues from a list of repositories to individual CSV files. |
| git-find-blob | Given a blob ID, finds the relevant commit |
| git-grab | Downloads a git directory from a webserver with an exposed .git directory |
| github-init-repo | Initialize a repo with a first commit and create it on GitHub |
| github-team-ssh-keys.sh | Get all SSH keys for a given team on GitHub |
| gitlistobjectbysize.sh | Third-party. Find large Git objects to find out what is taking space in your repository |
| git-pushall-branches | push all branches. |
| git-sync | This scrips intends to sync via git near-automatically |
| graphpath | Third-party. Graphpath generates an ASCII network diagram from the route table of a Unix/Linux |
| hda-analyzer | Third-party. Alsa debugging helper script |
| hosts | adblocking hosts file. I use this as fallback sometimes, since it committed |
| housekeeping | A housekeeping script that clears up space, syncs a few repositories |
| hsmarkdown.php | Third-party. PHP Markdown Extra with additional syntax for jsMath equations |
| i3-get-window-criteria | Third-party. Get criteria for use with i3 config commands |
| i3lock-fancy | Fancy i3lock |
| i3lock.sh | Custom i3lock script |
| i3-pomodoro | i3blocks pomodoro script |
| imguralbum.py | Third-party. Download a whole imgur album in one go. |
| json.sh | Third-party. Parse a JSON file using BASH. |
| LICENSE | Licenses for third party scripts. |
| lock.sh | Calls betterlockscreen |
| lowbatterycron.sh | Cron I run using systemd that notifies me if I am on low battery and power isn't connected |
| mdtable2csv | Third-party. Converts a markdown table in a file to CSV format |
| mobile-pass-sync@ | Sync helper for syncing my mobile-passwords. Now I use
housekeeping| | offline_filter.pl | Third-party. Simple liferea (and possibly for other things) conversion filter to download content for offline viewing during feed updates. | | parallel | Third-party. GNU parallel | | pass-show | Helper script to just output a one-line-password | | pdf-parser.py | Third-party script to parse a PDF | | pip2arch.py | Third-party script to generate PKGBUILD from pip packages | | plutil.pl | implementation of binary/UTF-8 (text) XML conversion of plist files | | port_block_check.sh | Run this behind a firewall to see if there are any outbound ports that are blocked | | prettyping | Third-party, runs a nice graphical ping | | pulse-recorder.py | Records a pulse audio stream easily. | | resty | Third-party. A tiny command line REST interface for bash and zsh. | | reverse_video.sh | Reverse a video | | rip-git.pl | Third-party. Brute force and download a publicly exposed .git directory | | s3-common.sh | Do S3 operations from Bash | | s3-delete | Do S3 operations from Bash | | s3-get | Do S3 operations from Bash | | s3-head | Do S3 operations from Bash | | s3-put | Do S3 operations from Bash | | screencast | Select a screen region and generate a nice GIF | | screen-darken.sh | Darken my laptop screen by running xrandr | | screen-off | Turn off the display by xset dpms. It will turn back on when on user-input | | seagate | Old sync script that I used to sync content to an external HDD regularly | | sem | GNU parallell (sem) | | shrinkpdf | Third-party. Shrinks a PDF by downsampling images (and a few other things) | | signcerts.sh | Runs dehydrated locally to update my certificates via LetsEncrypt. Sets my CloudFlare config and runs dehdyrated | | sleepsize.sh | Checks and reports the file size every 5 seconds. Helpful when you're copying large files, or waiting for something to complete. | | snippy.sh | Third-party. Helper script for i3 to let me create snippets and type them easily. | | split-audio-by-chapters | Splits a audiobook by its various chapters. I added support for providing a chapters.txt file with chapter names in case the M4B file doesn't have correct names | | split-by-audible | Similar to split-audio-by-chapters, but this one uses a different chapter-listing format, which is what you get when you copy the Audible tracklist from the Audible web player. | | split-by-silence | ffmpeg wrapper to use silence detection to split files. Source | | sql | Third-party. Runs SQL commands against different drivers based on DBURL. This is a GNU project | | ssl-cipher-test.sh | Runs a SSL Cipher test by testing all available ciphers against an upstream server | | stream-audio.sh | Streams pulseaudio to RTSP | | swaks | Third-party. Swaks is a swiss-knife toolkit for testing SMTP | | synaptic-tweaks.sh | Third-party. Minor configuration tweaks for synaptic touchpads | | syncMedia | Old script for syncing content | | syncrepos | Old script for syncing content. Now merged with housekeeping | | undelete | Attempt to find open file descriptors that are pointing to deleted files and try to recover them | | unimatrix | Third-party. Matrix animation on the terminal | | update.koreader | Updates KOReader on my Kindle. | | vimeo_downloader.sh | Third-party. Downloads a video fro Vimeo | | vtt2srt | Converts a VTT subtitle file to SRT (PHP) | | whoisplaying | Find out which process is playing audio. | | xsetup | Touchpad and other X configuration. | | yadisk | Download a file from Yandex Disk (like Dropbox) by using their API. | | yubi-insert.sh | Run when I insert a yubikey. Checks the Serial, and if they don't match, lock my screen | | yubilock.sh | Lock my screen when I remove my device. Runs using udev triggers | | ec | script to edit common configuration | | get-nav | Get NAV of a mutual fund from the Kuvera API | | audiobook2video | Generates a video for a music file, with a background | | fix-audible-m4a | Third-party. Fixes audible m4a fiels with incorrect Audio Object Type Specific Config bit. Source: https://rentry.co/n4ost |
| aps | ascii to .ps a file with specified fontsize (need a2ps installed) | |||
|---|---|---|---|---|
| clnM | clean ^M from DOS files (using sed) | |||
| clnMdir | clean ^M from each file in [dir] or ./ (using sed) | |||
| clnblanklines | delete blank lines from a file | |||
| clnduplines | clean duplicate lines in a file | |||
| clnmail | remove junk mail headers from a mail file | |||
| clnmaildir | remove junk mail headers from all mail files in a dir | |||
| clnns | clean out the netscape cache | |||
| clntex | clean out the tex/latex .aux .log | |||
| cntduplines | count duplicate lines in a file | |||
| cntfiles | count # of files and subdirs | |||
| cntlast | count # of logins, sort output by user | |||
| cntword | count # of times a word appears in ./ | |||
| deldir | delete an entire directory tree | |||
| dvi | dvips a .dvi file and produce .ps (need dvips installed) | |||
| e1ps | enscript pretty .ps of $file with $fontsize $fontfamily | |||
| e2ps | enscript pretty .ps to 2 columns | |||
| FtoC | Fahrenheit to Celcius conversion (using awk) | |||
| ffl | find file location (a simple glimpse substitute; see mkfiles) | |||
| g2dvi | groff a file and produce file.dvi (need groff installed) | |||
| g2ps | groff a file and produce file.ps (need groff installed) | |||
| gplot gpgp | gnuplot via script: plot and view dat file and produce file.ps (need: gplot, gpgp, gnuplot.sh, gnuplot_plot) | |||
| killns | kill a messed up / frozen netscape | |||
| latex2ps | latex file.tex and produce file.ps (need latex installed) | |||
| linkfiles | link each file from source_dir to targer_dir | |||
| listfonts | view xlsfonts with more | |||
| mail2list | mail a msgfile to a list of addresses without mailalias | |||
| manf | troff and view uninstalled man page file | |||
| manmo | view a manpage in a new xterm with more, ... | |||
| mkhtml.zip | create index.html listing all files in a dir as links | |||
| mkfiles | create listing of files for easy finding with script "ffl" | |||
| octalcharset | generate all characters from # \0000 to \0377 | |||
| ps2html | convert .ps to .html with webify | |||
| psg | ps on "process", to see if running | |||
| pso | ps on owner processes, to see which running | |||
| psoA | ps on all processes, to see what's running | |||
| refs | find a name in Refs.list file (primitive database search) | |||
| run | $aout < $data > $output and append timing to $output | |||
| sg | remote get "file" from "host" (scp must be functioning) | |||
| sp | remote put "file" to "host" (scp must be functioning) | |||
| scbig | sc spreadsheet on "file".sc (big size: 160x60)(need sc installed) | |||
| scsmall | sc spreadsheet on "file".sc (small size: 120x35)(need sc) | |||
| tarf | tar tf file.tar | more | |||
| tarx | tar xovf : untar a file.tar | |||
| tr2html | convert troff (ms) file to HTML 2.0 with unroff (need unroff) | |||
| up | uncompress/display/extract files of various types (.gz, .zip, .tar.gz, .Z) interactively ... very convenient! | |||
| zpdir | zip dir.zip dir/* (need zip, of course) |