What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Universal configuration monitoring and system of record for IT.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:



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!

Top Tags



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

List of commands you use most often

Terminal - List of commands you use most often
history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
2009-02-11 13:12:29
Functions: awk sort
List of commands you use most often


There is 1 alternative - vote for the best!

Terminal - Alternatives
history | awk '{print $2}' | sort | uniq -c | sort -rn | head
history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head > /tmp/cmds | gnuplot -persist <(echo 'plot "/tmp/cmds" using 1:xticlabels(2) with boxes')
2010-06-13 23:35:13
User: sthrs
Functions: awk echo head sort

Plot your most used commands with gnuplot.

history | awk '{a[$'$(echo "1 2 $HISTTIMEFORMAT" | wc -w)']++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
2010-05-02 21:48:53
User: bandie91
Functions: awk echo sort wc
Tags: history awk wc

If you use HISTTIMEFORMAT environment e.g. timestamping typed commands, $(echo "1 2 $HISTTIMEFORMAT" | wc -w)

gives the number of columns that containing non-command parts per lines.

It should universify this command.

history | awk '{if ($2 == "sudo") a[$3]++; else a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
HISTTIMEFORMAT='' history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head > /tmp/cmds ; gnuplot -persist <<<'plot "/tmp/cmds" using 1:xticlabels(2) with boxes'
2010-06-17 17:38:16
User: narcelio
Functions: awk head sort

This alternative cleans HISTTIMEFORMAT environment variable and calls gnuplot just after /tmp/cmds is closed, to avoid some errors.

Know a better way?

If you can do better, submit your command here.

What others think

It didn't work properly for me I used "history -$HISTSIZE" against just "history" to sue the full history and not only the 10th firsts.

my correction is then

history -$HISTSIZE | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head

Comment by yogsototh 402 weeks ago

since i got dates on my commands this one works better for me using the 4th column

history | awk '{a[$4]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head

Comment by bbelt16ag 400 weeks and 3 days ago

use this! more portable

history | awk '{a[$'`echo "1 2 $HISTTIMEFORMAT" | wc -w`']++}END{for(i in a){print a[i] "\t" i}}' | sort -rn | head

Comment by bandie91 397 weeks ago

history | sort -k2,3 | uniq -f 1 -c | sort -rn | head

Comment by taliver 361 weeks and 6 days ago

Arranges it in columns, and with a variable number of results. Use $ mostused NUMBERTOSHOW

mostused() { history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | ( echo "USES COMMAND" && head -n $1 ) | column -t; }
Comment by AtkinsSJ 339 weeks and 5 days ago

Your point of view

You must be signed in to comment.