We have seen how to identify options and parameters, but we still need a way to read the options values correctly.
You may need to pass a value for a specific option. How can this value be read?
We will check for the $2 variable while the iteration goes through the options that we expect a value for.
Check the following code:
#!/bin/bashwhile [ -n "$1" ]docase "$1" in-a) echo "-a option passed";;-b) param="$2"echo "-b option passed, with value $param"shift ;;-c) echo "-c option passed";;--) shiftbreak ;;*) echo "Option $1 not an option";;esacshiftdonenum=1for param in "$@"doecho "#$num: $param"num=$(( $num + 1 ))done
