Consider using an output file parameter, instead of printing to the console

[loganm]

Printing to the console and piping that result around is the "UNIX" way of doing things. It works but there are a couple of drawbacks.

• If the command prints errors to the console, those errors are piped into the package.xml file.
• You can't print status messages to the console while the job runs.

Add an output file parameter to the command line, and write directly to that file on success.