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filename as argument

filename as argument

filename as argument

I'm using Perl on UNIX. How do I make my program take
a filename as an argument? In other words, I have a
program that operates on an existing file and I want to
be able to type in my program name followed by a space followed by a file name and have my program operate on that file. I don't want to have to prompt the user for the filename.


RE: filename as argument

if you call your Perl script like this:

perl_script.pl the_data_file

You can get at the filename on the command line like this:

my $fname = shift || die "No filename on command line\n";

As Russ says, the command line arguments are stored in @ARGV, shift returns the first element of @ARGV and then removes it from @ARGV

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