Learn Linux Shell Scripting - Fundamentals of Bash 4.4

Final logging considerations

You might consider having your script take care of its own logging. While this is certainly possible, (although a little complex and not very readable), we feel strongly that it is the responsibility of the caller to take care of logging. If you find a script that takes care of its own logging, you might encounter some of the following issues:

• Multiple users run the same script at different intervals, to a single log file
• The log file needs to have robust user permissions to ensure correct exposure
• Both ad hoc and scheduled runs will appear in the log file

Simply put, delegating the responsibility of logging to the script itself is asking for trouble. For an ad hoc command, you get the output right in your Terminal. ...