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getopts - mutually exclusive flags
From: |
Chris Jones |
Subject: |
getopts - mutually exclusive flags |
Date: |
Sun, 26 Oct 2008 08:12:58 -0400 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
How do I handle mutually exclusive flags with getopts?
I'm writing a script that normally runs from cron and backs up my hard
drive.
But I'd like to be able to run it manually and specify via flags the
backup I want to run - daily/incremental or monthly/full.
$ backup -d # daily backup
$ backup -m # monthly ..
So far my best effort still finds the following acceptable:
$ backup -dm
I'm trying to use getopts to implement an exclusive OR of the two
options.
Incidentally, I am also curious of the "getopts" way to handle the
absence of _any_ flags.
Or am I using the wrong tool for the job?
Thanks!