Infinite Loop / While True One-liner

while :; do thing; done

Highlight a term from a program output

cat file | ack --passthru "TERM"

Replace text in a file

sed -i s/[find]/[replace]/g file

File / Directory Searching

Syntax: find [directory] <flags>

For each line do…

... | xargs -L1 -i{} echo Hello, {}!

Flags

• -iname "filename" - case insensitive search for “filename”
• -name "filename" - case sensitive search for “filename”
• -iname "*.txt" - case insensitive search for files/directories ending with “.txt”
• -type f - filter files
• -type d - filter directories
• -exec [cmd] \; - perform a command on each file. {} to reference the path
• -maxdepth [n] - maximum number of directories to recurse

Git Usefuls

• Ignore CR/LF endings

git config --global core.autocrlf true

• Ignore file mode permissions

  git config –global core.filemode true

• git lg - alias for a pretty log summary

  git config –global alias.lg=log –color –graph –pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset’ –abbrev-commit

• Git backup loop - perfect for badly version-controlling files!

#!/bin/bash

cd "$(dirname "$0")"
while :
do
  echo "Making backup at `date`"
  git add . > /dev/null
  git commit -m "Backup :: `date`" > /dev/null
  sleep $((10 * 60)) # 10 min interval
done 

Disable Python .pyc files from being created

export PYTHONDONTWRITEBYTECODE=1

Auto-start a service

systemctl enable SERVICE_NAME

systemctl disable SERVICE_NAME

2FA Authentication Setup

See here

Software

• exifclean - remove EXIF data from a file/files in a directory
  • alias exifclean="exiftool -r -P -gps:all= -overwrite_original"
• ncdu - CLI disk usage analyser
• askii - TUI based drawing tool
• gitup - Multi-Git repository updated
• X2Go - Remote desktop / Linux application access
• dog - Improved dig client (DNS)
• powerline - Shell status prompt
• zoxide - Improved cd functionality
• delta - git diff tool
• tty-share - Terminal session sharing (over the web)

Drop-in Replacements

• batcat - Improved cat
  • alias cat="batcat --tabs 2 --theme OneHalfDark"