1: #!/bin/sh
   2: # Example 14
   3: # Take stderr from a command and pass it into a pipe
   4: # for further processing.
   5: 
   6: # Uses ex13.sh to generate some output to stderr
   7: # stdout of ex13 is processed normally
   8: 
   9: # Save a copy of original stdout
  10: exec 3>&1
  11: 
  12: # stdout from ex13.sh is directed to the original stdout (3)
  13: # stderr is passed into the pipe for further processing.
  14: # stdout from the pipe is redirected back to stderr
  15: ./ex13.sh 2>&1 1>&3 3>&-  | sed 's/stderr/STDERR/' 1>&2
  16: 
  17: # 3 is closed before running the command, just in case it cares
  18: # about inheriting open file descriptors.