Variable assignment inside a case statement (bash) [duplicate]

Question

I am trying to parse incoming options in my bash script, and save the values in variables. This is my code:

#!/bin/bash 

while getopts "H:w:c" flag
do 
#  echo $flag $OPTIND $OPTARG
    case $flag in
    H) host = "$OPTARG"
    ;;
    w) warning = "$OPTARG"
    ;;
    c) critical = "$OPTARG"
    ;;
    esac
done

However, the statements inside 'case' must be command-line commands, so I can't make the wanted assignment. What is the right way to do this?

Answer 1

Remove the spaces around the = operators:

case "$flag" in
  H) host="$OPTARG" ;;
  w) warning="$OPTARG" ;;
  c) critical="$OPTARG" ;;
esac