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box-o-sand/perl-practice/cli/ex02/input_fromfile.pl

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437 B

#!/usr/bin/env perl
use strict;
use warnings;
use IO::File;
use File::Basename;
my $script = basename($0);
my $USAGE = <<USAGE
Usage: $script <infile>
USAGE
;
if (!defined $ARGV[0]) {
die $USAGE;
}
my $infile = $ARGV[0];
open(DAT, $infile) or die "$infile: $!";
my @cleaned = ();
foreach my $line (<DAT>) {
$line =~ s/\s*$//;
$cleaned[++$#cleaned] = $line;
}
print join("|", @cleaned) . "\n";
close(DAT);
1;
__END__