I recently posted a question on how I could pipe many files into a single perl script, and received answers such as "use @ARGV", which worked great for small projects. The command line input worked just like I needed it to. The problem, however, is that it turns out I actually have far more files to deal with than I thought, on the order of 100,000 at a time. Due to the size of the list in the command line, even when I use a wildcard, I get error output like this:
-bash: /usr/bin/perl: Argument list too long
Thus I have a problem. My input list is too long for my program to pipe in. What other solutions do I have? Is using @ARGV still a good idea, or do I have to look at another avenue? UPDATE!!!: I got my code to work! Thanks especially to Corion for recommending tye's sort function. Basically, this is how it played out:
@ARGV=glob my $pattern; my @files=@ARGV; my @sorted = @file[ map { unpack "N", substr($_,-4) } sort map { my $key = $file[$_]; $key =~ s[(\d+)][ pack "N", $1 ]ge; $key . pack "N", $_ } 0..$#file ]; @ARGV=@sorted; while (<>) { Do my function } if (eof(ARGV)) { Do end of file cleanup }
Using this format, I was able to still use the <> operator, while piping in a sorted ARGV, so my output came out like this:
file1 file2 .... file10 file11
This is exactly what I wanted. Thanks for all the help!

In reply to Multiple file input into a perl script by kelder

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