#!/bin/sh # Example 14 # Take stderr from a command and pass it into a pipe # for further processing. # Uses ex13.sh to generate some output to stderr # stdout of ex13 is processed normally # Save a copy of original stdout exec 3>&1 # stdout from ex13.sh is directed to the original stdout (3) # stderr is passed into the pipe for further processing. # stdout from the pipe is redirected back to stderr ./ex13.sh 2>&1 1>&3 3>&- | sed 's/stderr/STDERR/' 1>&2 # 3 is closed before running the command, just in case it cares # about inheriting open file descriptors.