Re: Checking for STDIN

[AltBlue]

-t STDIN

[Anonymous Monk]

-t will not work because I am using my script in a cron job sometimes.

[AltBlue]

What do you mean?!

Save this code to a file and test it.

#!/usr/bin/perl -wl
use strict;
open my $fh, '>', '/tmp/test.log' or die $!;
print $fh 'STDIN ', ( -t STDIN ? 'IS' : 'is NOT' ), ' available' or di
+e $!;
close $fh or die $!;

[dbmathis]

In a cron job -t would evaluate to false which in my case would mean my script would think info is being piped to it when I have a commandline option -logfile <file> being used to specify input.