How to set options for bash script -

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• example of how use getopts in bash 4 answers

if have script called program , want set option if -p entered option program echoes "polly want cracker", how should go use getopt this?

i give little example can develop own needs :

#!/bin/bash  while getopts "bp" option     case $option in         b)             echo "polly want banana"             ;;         p)             echo "polly want cracker"             ;;     esac done