env # displays all environment variables echo $SHELL # displays the shell you're using echo $BASH_VERSION # displays bash version bash # if you want to use bash (type exit to go back to your previously opened shell) whereis bash # locates the binary, source and manual-page for a command which bash # finds out which program is executed as 'bash' (default: /bin/bash, can change across environments) clear # clears content on window (hide displayed lines)

mkdir # makes a new directory rmdir # remove an empty directory rmdir -rf # remove a non-empty directory mv # rename a directory from to cd # changes to home

# Reset Color_Off='33[0m' # Text Reset # Regular Colors Black='33[0;30m' # Black Red='33[0;31m' # Red Green='33[0;32m' # Green Yellow='33[0;33m' # Yellow

CTRL+A # move to beginning of line CTRL+B # moves backward one character CTRL+C # halts the current command CTRL+D # deletes one character backward or logs out of current session, similar to exit CTRL+E # moves to end of line

bash -n scriptname # don't run commands; check for syntax errors only set -o noexec # alternative (set option in script) bash -v scriptname # echo commands before running them set -o verbose # alternative (set option in script)