SPUG:command line switches: the DWIMmyness that is Perl

SPUG-list-owner tim at consultix-inc.com
Mon Jan 20 11:12:52 CST 2003

On Sun, Jan 19, 2003 at 11:59:24PM -0800, Fred Morris wrote:
> Hi all,
> I use Perl for all sorts of complicated things, but I confess to never
> having played with the command line switches until tonight. I wanted
> something which would expand tabs into spaces, but I wanted to be able to
> specify the tab stop: sometimes it's 4, sometimes it's 8... anybody else
> find themselves in the same predicament?
> Fred Morris
> m3047 at inwa.net

There's a much easier way to handle switches, suitable for whipping things
up really quickly.

Just use the -s invocation option, and then the user can do -tabstop=5
as a command-line argument to set the variable $tabstop to 5 within the
script, or simply -tabstop to set the same variable to a true value.  
See perldoc perlrun for details.

| Tim Maher, CONSULTIX    (206) 781-UNIX    (866) DOC-PERL  |
|  CEO, JAWCAR ("Just Another White Camel Award Recipient") |
|  tim at consultix-inc.com  teachmeunix.com  teachmeperl.com  |
| CLASSES:  Basic Perl: 2/10-12    Perl Modules: 2/13-14    |

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