bashparameter-expansion

bash read between two strings using parameter expansion expression

This is how my input string looks like:

INPUT_STRING="{/p1/p2=grabthistext}"

I want to print grabthistext from the INPUT_STRING.

I tried echo "${INPUT_STRING##*=}" which prints grabthistext}

How do I read only grabthistext using parameter expansion expression?

Solution

  • If you really want a single parameter expansion then you can use:

    #!/bin/bash
shopt -s extglob

INPUT_STRING="{/p1/p2=grabthistext}"

echo "${INPUT_STRING//@(*=|\})}"

    grabthistext

    I would use a bash regex though:

    #!/bin/bash

INPUT_STRING="{/p1/p2=grabthistext}"

[[ $INPUT_STRING =~ =(.*)} ]] && echo "${BASH_REMATCH[1]}"

    grabthistext