how to select the last line of the shell output

Question

Hi I have a shell command like this.

s3=$(awk \'BEGIN{ print \"S3 bucket path\" }
 /Executing command\\(queryId/{ sub(/.*queryId=[^[:space:]]+: /,\"\"); q=$0 }
          


        

Answer 1

another approach can be, processing the file from the end and exiting after first match.

tac file | awk '/match/{print; exit}'