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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

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 are 7 alternatives - 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?

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What others think

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

Comment by raphink 427 weeks ago

-bash: tac: command not found

Comment by grep 427 weeks ago

Ah, BSD is missing some useful tools?

Comment by raphink 427 weeks 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 427 weeks ago

On FreeBSD it's easy, too:

tail -r
Comment by inof 411 weeks and 6 days ago

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

Comment by pebkac 327 weeks ago

Your point of view

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