~krathalan/miscellaneous-scripts

#Krathalan's Scripts

This repository is a collection of scripts I wrote and use/update regularly. These scripts are provided without warranty in the hope that you will find them useful. Contributions are accepted, just open an issue or a pull request.

Please don't run these scripts without reading them first. Always read a script before running it on your machine, especially if it requires sudo/root privileges.

Seven POSIX-compliant sh scripts, seven Bash scripts. Scripts ending in .sh are POSIX-complaint without "Bash-isms". Scripts that are Bash-only often are because of the use of arrays.

#`audio_to_opus` (bash)

Simply specify an audio type (e.g. "mp3", "flac") and this script will convert all audio files in that directory to the opus format.

For example, if you execute bash audio_to_opus flac: all "*.flac" files in the working directory will be converted to "*.opus" files, all "*.flac" files will be placed into a new "flac/" directory, again in the working directory.

#`aur` (bash)

Miniscule AUR helper.

Four functions:

=> [c]heck           - Check local package versions against those on the AUR.
                       Pass --quiet/-q flag to print only non-matching versions.
=> [f]etch [name(s)] - Clone git repository of [name] package(s) on the AUR.
=> [p]kgbuild [name] - Print the PKGBUILD for [name] package
=> [i]nfo [name]     - Show full information for [name] package on the AUR.
=> [s]earch [name]   - Search for [name] on the AUR.

Note that though aur is licensed under the GPLv3 license, the script incorporates work Copyright (C) 2016-2019 Dylan Araps originally from MIT-licensed code from pash. See Maintaining Permissive-Licensed Files in a GPL-Licensed Project: Guidelines for Developers by the Software Freedom Law Center for more information.

#`check_all.sh`

Checks all shell scripts in the current directory with shellcheck.

#`gather_time_data` (bash)

I no longer recommend using this script. Instead I recommend using hyperfine: https://github.com/sharkdp/hyperfine

#`list_nonfree_packages` (bash)

Lists nonfree packages installed on Arch Linux according to Parabola's blacklist. Ignores packages that are blacklisted for "branding" or "technical" reasons; that is, they are not necessarily nonfree, but may conflict with Parabola's rebuilds of certain packages.

#`make_gif.sh`

I made this script after the camera app I use on my phone lost its auto-gif-making functionality whenever I would take burst photos.

To use it, put the photos you want to make into a gif into a directory, and then run the script in that directory.

Here's an example gif of my cat I made with make_gif:

Example

#mythic_event

A script I made for my World of Warcraft guild's Mythic+ dungeon event. Supply a list of characters, like so:

$ cat example_input
  Ahkenatan chogall
  Morisong chogall
  Tireiron laughing-skull
  Euphoric chogall

And the script will output a file ratings.txt, with Raider.IO information for each character in the list:

$ cat ratings.txt
  ======================================================
  |      Collector's Anonymous Mythic Plus Ratings     |
  |              Generated on Jun 11, 2020             |
  | https://git.sr.ht/~krathalan/miscellaneous-scripts |
  ======================================================

  IO Score -- Character, ilvl class
  =================================

  Tanks:
  1713 -- Tireiron, 475 Paladin

  Healers:
  1793 -- Euphoric, 479 Monk

  DPS:
  2136 -- Ahkenatan, 476 Mage
  1993 -- Morisong, 474 Mage

#`prntscrn.sh`

Takes a nice screenshot after the specified seconds and saves it to ${XDG_PICTURES_DIR}/screenshots. Displays a notification when the screenshot is taken. Easily bound to a key in your i3 or sway config. Uses scrot for i3/Xorg and grim for sway/Wayland. Provides nice errors via desktop notifications as well if you don't have the proper package installed.

On sway/Wayland, invoking prntscrn.sh with any argument, like prntscrn.sh slurp, will allow you to select an area of the screen and will copy the selected jpeg to your clipboard.

#`remove_from_name` (bash)

This script will rename all files in the current working directory by removing a specified string from their file names.

For example:

$ ls
test-remove1.txt  test-remove2.txt  test-remove3.txt  test-remove4.txt  test-remove5.txt

$ remove_from_name "remove"
==> This is what the files will be renamed to:
test-1.txt
test-2.txt
test-3.txt
test-4.txt
test-5.txt

==> Proceed with renaming?
[y/N] y
Files renamed.

#`scramble_photos.sh`

Deletes the exif data on all photos in the current directory and attempts to restore the "datetimeoriginal" (date taken) value from the photo's file name. Then moves them to ${HOME}/pictures/$(date +%Y), e.g. ~/pictures/2020; creating the folder if it doesn't exist. Pass --no-copy to keep them in the current directory.

#`script_template.sh`

A simple POSIX-compliant script template I use. Easy to use as a Bash script template as well.

#`system_maintenance.sh`

This script will perform system maintenance on an Arch Linux system. It will:

Clean pacman caches (if the flag --clean is passed)
Update /etc/pacman.d/mirrorlist if it hasn't been updated in more than 3.5 days
- This functionality requires the reflector package to be installed
Update installed packages
Check for AUR package updates
- This functionality requires the aur script from this repo to be in your $PATH
Remove unused packages
Remove journald entries older than 1 day
Update installed flatpaks and remove unused flatpaks
- This functionality requires the flatpak package to be installed
Check your pacman database for errors
List failed systemd units
List *.pacsave and *.pacnew files in /etc
Print disk usage

#`timer.sh`

Requires the termdown and mpv packages to be installed.

Specify a termdown timer, e.g. timer.sh 5m, and this script will play a sound file on repeat when the termdown timer is finished. Specify which sound file to play by setting the $TIMER_SOUND_FILE environment variable to a valid sound file path.

#`update_git_repos` (bash)

This script will run git pull --prune inside every Git repository in the current directory.

#`update_wow_addons` (bash)

I no longer recommend using this script. Instead I recommend using Cursebreaker: https://github.com/AcidWeb/CurseBreaker

#`watch_add_packages` (bash)

Watches a specified directory ($DROPBOX_PATH in your env) for new packages and moves them to a specified pacman repo ($REPO_ROOT in your env). Adds them to a specified pacman repo database file ($REPO_DB_FILE in your env).

Comes with watch_add_packages.service. To add your own enviroment variables to a server environment, first create the override directory:

$ sudo mkdir /etc/systemd/system/watch_add_packages.service.d

Then save an override file (for example /etc/systemd/system/watch_add_packages.service.d/env-vars.conf) with the following contents (change the actual paths to match your own setup):

[Service]
Environment="REPO_ROOT=/var/www/builds/x86_64"
Environment="REPO_DB_FILE=krathalan.db.tar"
Environment="DROPBOX_PATH=/home/admin/package-dropbox"

Finally, reload systemd and restart the service:

$ sudo systemctl daemon-reload && sudo systemctl restart watch_add_packages.service

Now whenever you rsync packages to the $DROPBOX_PATH on the remote, watch_add_packages will pick them up and move them to $REPO_ROOT, chown root:root them, and add them to the $REPO_DB_FILE.

refs

clone