Repository for useful notes

Created 2 branches for testing pull requests

Bash Cheat Sheet

Basic Commands

• pwd - Print the current working directory.
• ls - List files in the current directory.
  • ls -l - Long format.
  • ls -a - Show hidden files.
• cd - Change directory.
• mkdir - Create a new directory.
• rm - Remove a file.
  • rm -r - Remove a directory and its contents.
• cp - Copy files or directories.
• mv - Move or rename files or directories.

File Viewing

• cat - Print the contents of a file.
• less - View file contents page by page.
• head - Show the first 10 lines of a file.
• tail - Show the last 10 lines of a file.
  • tail -f - Follow a file as it grows (e.g., logs).

Permissions

• chmod - Change file permissions.
  • Example: chmod 755 script.sh
• chown : - Change the owner of a file.

Variables

• VAR=value - Define a variable.
• $VAR - Access a variable's value.
• export VAR=value - Make a variable available to child processes.

Loops and Conditionals

For Loop

for i in {1..5}; do
  echo "Iteration $i"
done