If you didn't care about what file name you're processing, the entire script could look like this:

die "Usage: mytest filename [filename [...]]\n" unless @ARGV;
print while <>;

[download]

...because (see perlop) the <> operator shifts filenames off of @ARGV and opens them internally. If @ARGV starts out empty, it reads from STDIN instead.

Here's another approach that is quite similar to yours, but borrows the idea of shifting filenames out of @ARGV:

die "Usage: mytest filename [filename [...]]\n" unless @ARGV;

while( my $file = shift ) {
  open my $ifh, '<', $file or die $!;
  print "$file($.): $_" while <$ifh>;
}

[download]

Dave

In reply to Re: Reading multiple files one line at a time from arguments by davido
in thread Reading multiple files one line at a time from arguments by jaypal

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