[SOLVED] Replacement substring in shell input

Issue

I get the set of strings as input in terminal. I need to replace the ".awk" substring to ".sh" in each string using shell and then output modified string. I wrote such script for doing this:

#!/bin/bash

while read line
do
  result=${line/.awk/.sh}
  echo $result
done

But it gives me an error: script-ch.sh: 6: script-ch.sh: Bad substitution.

How should I change this simple script to fix error?

UPD: ".awk" may be inside the string. For example: "file.awk.old".

Solution

Not sure why it works for you and not for me.. might be the input you're giving it. It could have a space in it.

This should work:

#!/bin/bash

while read line
do
  result=$(echo $line | sed 's/\.awk/\.sh/')
  echo $result
done

Answered By - Mike Furlender