Monks
This has got to be in the silly easy category, but I can't think of it for the life of me and I can't get the right keywords in super search to show what I'm missing...
I'm wanting to process a series of files but rather than go...
-->process file1 file2 file3
...I want to be able to go some thing like
-->ls file* | process
I'm running on linux and was under the impression that if I piped data it would appear as command line arguments, but this does not seem to be the case, or at least I'm doing it wrong.
So writing a simple example(counting lines) the does the first case does not work for the second...
#!/usr/bin/perl
use strict;
use warnings;
my $numargs = $#ARGV + 1;
if ( $numargs == 0 ) {
print "Incorrect number or arguments($numargs)...\nFormat: lin
+es <file>\n\n";
exit(0);
}
my $t = 0;
for my $f ( 0 .. $#ARGV ) {
my $file = $ARGV[$f];
open FILE, "<$file" or die "Could not open file, $file : $!\n"
+;
my $c = 0;
while (<FILE>) {
$c++;
$t++;
}
close (FILE);
print "$c\n";
}
print "----\n$t\n";
Could someone please enlighten me to my fault and offer a solution for processing piped content and command line args? I've got a feeling I might have to check for command arguments and then if there are none then open up the standard input stream to receive content?
Regards Paul.
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