I have a program which outputs a result. I am able to specify what it pipes it to, and would like to add an extra line to the end of the result before printing it. The program lets me specify how i would like the result to be received in two ways: [result] | (piped in) [result] > (added in) I can only add commands after it has done this. At the moment it pipes straight to a print command. I hope this is clear enough, thanks in advance.

Try using a named pipe. Shove all your data into the pipe and at the end of the script, you can cat the pipe and send it out through your print pipes. Here is a simple example of using a named pipe: PIPE=/tmp/tempPipe mkfifo -m 660 $PIPE || (echo "cannot create named pipe"; exit 1) print "\n" > $PIPE & print "Hi mom" >> $PIPE & print "Sleeping 5" cat $PIPE Do all your writes to the named pipe in background. Otherwise, the script will sit and wait for a reader process for the pipe.