Oh wise oh, powerful monks! On p.97 of Llama, merlyn states thusly:

Write a program that acts like cat, but reverses the order of the output lines. (Some systems have a utility like this called tac.) If you run yours as ./tac fred barney betty, the output should be all of file betty from last line to first, then barney then fred, also from last line to first.


I seem to be having trouble reversing the input, but not the files.
#!/usr/bin/perl -w use strict; @ARGV = reverse @ARGV; while (<>) { chomp; print "\n@_\n"; }


I've tried a couple of different approaches that didn't work. Here's an example:
#!/usr/bin/perl -w my $in; @ARGV = ( reverse @ARGV); foreach my $x (@ARGV){ @in = <$x>; @in = reverse @in; } while (@in) { chomp; print "\n$_\n"; }
I get perl complaining of "readline() on unopened file at ./tac.pl line 7."when I tried that solution. This seems simple, but in practice I am stumped. I'd appreciate the help of a more powerful monk.

Many THANKS!


In reply to Llama ./tac stumper by bluethundr

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