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Re: a one-liner for this trivial problem?

by space_monk (Chaplain)
on Apr 16, 2013 at 17:09 UTC ( #1028963=note: print w/replies, xml ) Need Help??

in reply to a one-liner for this trivial problem?

This solution is just if you really insist on using Perl; the Re: a one-liner for this trivial problem? suggestion using grep is better....
perl -pie ' BEGIN { open $fh, "<" , "littlefile" or die "Cannot read file"; our %hash = map { $_ => 1} <$fh>; } print if not $hash{$_}; ' < bigfile

All the above will go on one line. any minor bugs are your problem (chomps may be needed for example) :-)

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