Actually, no need for an API, sort of. There's PerlIO::reverse which lets you just add a layer when opening a file, then use your good ol' Perl API: 

open my $fh, "<:reverse", "/etc/passwd";
print for <$fh>;

[download]

Like File::ReadBackwards, but unlike the tac command, PerlIO::reverse only does line-by-line reversing though.

In reply to Re^2: Reading the contents of a file from the bottom up by perlancar
in thread Reading the contents of a file from the bottom up by Scotmonk

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