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  2. MIDRANGE-L
  3. May 2009

Re: Testing for a value not sent to a shell script

Hi John,

I thought there was a $something that returned the number of arguments supplied.

Yes, $# should give you the number of arguments.


If I needed to write a script that needed to default to something if a single
argument was omitted, what is that function? For instance cal does current
month and cal with 2009 does the given year.

$# would probably work for that as well. Though, I suspect 'cal' isn't a shell script, it's probably a C program, and is checking argc.


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