Re^3: matching the contents of two (2) files


Perl Monk, Perl Meditation
	PerlMonks

Re^3: matching the contents of two (2) files

by dragonchild (Archbishop)

on Mar 11, 2005 at 02:15 UTC ( [id://438498]=note: print w/replies, xml )

Need Help??

in reply to Re^2: matching the contents of two (2) files
in thread matching the contents of two (2) files

Let's see ... that's about 70 characters.

#234567890#234567890#234567890#234567890
-p BEGIN{@x{+pop}=()}exists$x{$_}||next
[download]

That's 39 characters. You have to run it as so from the command line.

perl -p -e 'BEGIN{@x{+pop}=()}exists$x{$_}||next' FIRST.txt LAST.txt >
+ MISSING.txt
[download]

This is really untested code, but it _should_ work. :-)

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.