I'm trying to enable only certain options when using the read command, and to exit the script if a wrong possibility was entered.Tried many possibilities (array, variables, syntax change), but I'm still stuck with my initial problem.How do I test the input of the user and allow \ disallow to run the rest of the script?#!/bin/bashred=$(tput setaf 1)textreset=$(tput sgr0) echo -n 'Please enter requested region > 'echo 'us-east-1, us-west-2, us-west-1, eu-central-1, ap-southeast-1, ap-northeast-1, ap-southeast-2, ap-northeast-2, ap-south-1, sa-east-1'read textif [ -n $text ] && [ $text != 'us-east-1' -o us-west-2 -o us-west-1 -o eu-central-1 -o ap-southeast-1 -o ap-northeast-1 -o ap-southeast-2 -o  ap-northeast-2 -o ap-south-1 -o sa-east-1 ] ; then echo 'Please enter the region name in its correct form, as describe above'elseecho you have chosen ${red} $text ${textreset} region.AWS_REGION=$textecho $AWS_REGIONfi
Comparing multiple options in a bash (string)
bash;shell script;shell;scripting
Why don't you use case? case $text in   us-east-1|us-west-2|us-west-1|eu-central-1|ap-southeast-1|etc)          echo Working  ;;  *)         echo Invalid option: $text  ;;esac 