[juneau-lug] Re: What does . mean?

  • From: "James Zuelow" <jamesz@xxxxxxxxxxxxxxxx>
  • To: <juneau-lug@xxxxxxxxxxxxx>
  • Date: Thu, 27 Mar 2003 15:20:22 -0800



> -----Original Message-----
> From: juneau-lug-bounce@xxxxxxxxxxxxx 
> [mailto:juneau-lug-bounce@xxxxxxxxxxxxx] On Behalf Of Myron Davis
> Sent: Thursday, March 27, 2003 4:08 PM
> To: juneau-lug@xxxxxxxxxxxxx
> Subject: [juneau-lug] Re: What does . mean?
> 
> 
> I always think of it as this:
> 
> source = .
> 
> . is just a shortcut for typing source in your shell script.
> 
> -Myron

I think that is the default bash (Linux) behavior, and that's how I've
always thought about it as well.  However on the OpenBSD box I have here
at work, they aren't the same.

csh has 'source' but not '.'
sh has '.' but not 'source'

So a script would run or not depending on whether you were root.
(OpenBSD normal users use sh by default, while root runs csh by
default.)

Example:

$ source testtwo.sh Kevin
sh: source: not found
$ su -
JuneauIMAP# cd /home/james
JuneauIMAP# ./testtwo.sh Kevin
.: Command not found.

And the two commands are subtly different.

Fun stuff!

James


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