http://y7egb5vi45k74makeixpfb7jnimfxm3gf233lb3ke2ldonozjk55nvad.onion/bash_reference_cheatsheet.html
"$1" == "--" ]]; do case $1 in
-V | --version )
echo $version
exit
;;
-s | --string )
shift; string=$1
;;
-f | --flag )
flag=1
;;
esac; shift; done
if [[ "$1" == '--' ]]; then shift; fi Heredoc cat <<END
hello world
END Reading input echo -n "Proceed? [y/n]: "
read ans
echo $ans read -n 1 ans # Just one character Special variables Expression Description $?