On Tue, 3 Jun 2003 22:38:47 -0700 (PDT), [EMAIL PROTECTED]
(Saurabh Singhvi) wrote:
>well i was trying to understand the "regular
>expressions" in perl when i came across <STDIN> i
>tried my best but i havent been able to get the
>slightest idea on how the input thing works. The
>editor i use is DzSoft. And it shows something like
>"get" and something else below like script something
>with blank space.
>
>Any hopes 4 me?? :-(
>Well i hope for me anyways ;)
>Help please
>Thanks in advamce :)
All programs have 3 default input-output filehandles,
they are STDIN, STDOUT, and STDERR. For Standard
Input, Standard Output, and Standard Error.
They default to:
STDIN -> keyboard input
STDOUT -> your screen
STDERR -> your screen
They are used so often, that alot of short-cuts have
evolved, so you don't always have to write them out.
Run this and watch what it does.
#!/usr/bin/perl
while(<>){print}
without the shortcuts, it would look like this:
while(<STDIN>){print STDOUT}
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