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How do I read a file line by line in reverse order (from EOF to start of file)

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Contributed by Zombie elanajk on Jul 05, 2001 at 22:14 UTC
Q&A  > files


Answer: How do I read a file line by line in reverse order (from EOF to start of file)
contributed by particle

you may find this node helpful... Is there a way to read a file backwards?

~Particle

Answer: How do I read a file line by line in reverse order (from EOF to start of file)
contributed by swngnmonk

If you're on a unix (at least Linux) system, you can use the command 'tac' to reverse the lines in a file. so:

$/ = "\n"; open(REVERSE_FILE, "|/usr/bin/tac $filename"); while (<REVERSE_FILE>) { print "$_\n"; } close REVERSE_FILE;
Answer: How do I read a file line by line in reverse order (from EOF to start of file)
contributed by kryberg

open( FILE, "<$file_to_reverse" ) or die( "Can't open file file_to_reverse: $!" ); @lines = reverse <FILE>; foreach $line (@lines) { # do something with $line }
Reference Chapter 8 of the Perl Cookbook.
Answer: How do I read a file line by line in reverse order (from EOF to start of file)
contributed by jdporter

use File::ReadBackwards;

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