Binaries and scripts

Meta

• explainshell.com - match command-line arguments to their help text

  Binaries

xkill

Lets you click a x11 window to kill the underlying process!

date

print or set the system date and time

• get dates for e.g. file names : date -Iminutes

  maim

  maim (make image) takes screenshots of your desktop. It has options to take only a region, and relies on another program called slop to query the user for regions using the graphical interface.
• full sceenshot : maim destination.png
• current window screenshot : maim -i (xdotool getactivewindow) destination.png
• selected area screenshot : maim -s destination.png
• name output based on time : maim (date -Iminutes).png
• get color of selected pixel : maim -st 0 | convert - -resize 1x1\! -format '%!!![]()()(pixel:p{0,0})' info:-

  xclip

  command line interface to X selections (clipboard)
• pipe screenshot to clipboard : maim -s | xclip -selection clipboard --target image/png
• pipe program output to clipboard : head file.txt | xclip -selection clipbaord

  tac

  reverse input line-wise

  rev

  reverse input character-wise

  didder

  didder is an extensive, fast, and accurate command-line image dithering tool. github

ffmpeg

Create animated gif from screen area

ffmpeg -framerate 25 -f x11grab (slop -f '-video_size %wx%h -i :0.0+%x,%y' | string split ' ') ~/Videos/capture_(date -Iminutes).mkv

Scripts

Find and replace using sed across all occurrances in a folder

find . -type f -exec sed -i.txt "s/foo/bar/g" {} \;

Rename file extension

!#/bin/bash
for f in *.JPG;
  do mv -- "$f" "${f%.JPG}.jpg";
done

Get paste-able filename list (used for {log} entries)

ls -1 2021-08-*

Migrating from .mmx to .mx

Images

find . -type f -name "*.md" -exec gsed --regexp-extended -i.bak "s/\!!![](](([^]((\S*)()]*))?\)/!![)(\3)(\1)/g" {} \;

Links

find . -type f -name "*.md" -exec gsed --regexp-extended -i.bak "s/\{(\S*), (!!![](]()(^\})*)\}/[\2)(\1)/g" {} \;