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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.




reverse order of file

Terminal - reverse order of file
sed '1!G;h;$!d'
2009-02-16 21:05:54
User: grep
Functions: sed
reverse order of file


There is 1 alternative - vote for the best!

Terminal - Alternatives
tac $FILE
awk '{a[i++]=$0} END {for (j=i-1; j>=0;) print a[j--] }'
2011-10-23 10:28:23
User: Bonster
Functions: awk

awk reverse order of lines (emulates "tac")

printf "g/^/m0\nw\nq"|ed $FILE
2011-05-27 08:57:31
User: till
Functions: ed printf
Tags: vim reverse ed

also works in vim


Know a better way?

If you can do better, submit your command here.

What others think

Beautiful line, although the result is the same as "tac".

Comment by raphink 318 weeks and 5 days ago

-bash: tac: command not found

Comment by grep 318 weeks and 5 days ago

Ah, BSD is missing some useful tools?

Comment by raphink 318 weeks and 5 days ago

freeBSD doesn't come with everything by default; it just comes with the useful stuff ;)

all joking aside freeBSD is fairly minimalist. Anything program you want can be compiled and installed from ports.

Comment by grep 318 weeks and 5 days ago

On FreeBSD it's easy, too:

tail -r
Comment by inof 303 weeks and 4 days ago

You just have to apt-get install tac or yum tac and it will install

Comment by pebkac 218 weeks and 5 days ago

Your point of view

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