Miscellaneous
echo [text]
Display a line of text.
echo "Hello, World!" → Prints Hello, World! to the terminal.
clear
Clear the terminal screen.
clear → Clears the terminal screen.
date
Display or set the system date and time.
date → Displays the current date and time.
cal
Display a calendar.
cal → Displays the current month's calendar.
history
Show the command history.
history → Lists the previously used commands.
man [command]
Display the manual page for a command.
man ls → Shows the manual for the ls command.
alias [name]='[command]'
Create a shortcut for a command.
alias ll='ls -l' → Creates an alias ll for ls -l.
unalias [name]
Remove an alias.
unalias ll → Removes the alias ll.
sleep [time]
Pause for a specified amount of time.
sleep 5 → Pauses the terminal for 5 seconds.
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