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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.


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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.
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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:

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Commands by adeverteuil from sorted by
Terminal - Commands by adeverteuil - 9 results
<ctrl+o><ctrl+d>
2015-08-19 20:57:09
User: adeverteuil
Tags: exit mc
1

For those who like to hit instead of typing "exit" to leave the shell and find it annoying that it doesn't work in Midnight Commander, just press to switch to the subshell and now you can leave with

command foo bar | sudo tee /etc/write-protected > /dev/null
x=1024; y=32768; cat <(echo -e "P5\n$x $y\n255\n") <(dd if=/dev/sda1 bs=$x count=$y) > sda1.pgm
2012-03-06 03:09:16
User: adeverteuil
Functions: cat dd echo
Tags: dd images pnm pgm
1

Keep width to a power of 2 to see patterns emerge. 512 is good. So is 4096 for huge maps.

PNM headers are super basic.

http://netpbm.sourceforge.net/doc/pbm.html

command <<< word
2012-02-29 03:14:54
User: adeverteuil
Functions: command
Tags: bash stdin
12

Don't do this:

echo word | command

Using a bash "here strings" and "here documents" look leeter than piping echo into the command. Also prevents subshell execution. Word is also expanded as usual.

for ((x=0;;x+=5)); do sleep 5; espeak $x & done
2012-02-22 00:26:57
User: adeverteuil
Functions: sleep
Tags: audio bash timer
5

Useful contexts :

You are doing yoga or some other physical training in which you are holding a position.

Or you practice the pomodoro productivity technique.

Or your girlfriend said "We're leaving in 40 minutes".

Design details:

sleep executes before espeak to give you a 5 seconds head start.

espeak is run in the background so it doesn't mess up the timing.

find -maxdepth 1 -mtime 0 -type f
2010-07-30 01:56:34
User: adeverteuil
Functions: find
Tags: find today mtime
2

Then pipe to 'xargs ls' for a familiar listing, possibly using find's -print0 and xarg's -0 options.

echo "export DISPLAY=:0; export XAUTHORITY=~/.Xauthority; notify-send test" | at now+1minute
2010-07-27 00:10:08
User: adeverteuil
Functions: at echo
Tags: notify-send
20

You can write a script that does this :

remind <minutes> [<message>]
<ctrl+u> [...] <ctrl+y>
2010-07-23 03:33:46
User: adeverteuil
195

Example :

vim /etc/fstab

## damn

<ctrl+u> sudo <ctrl+y>

## like a boss.

Example 2 :

sudo vim /root/bin/

##uh... autocomplete doesn't work...

<ctrl+u> sudo ls /root/bin

##ah! that's the name of the file!

<ctrl+y> sudo vim /root/bin/ ##resume here! Thanks readline!
ls -l `which foo`
2010-07-09 01:34:02
User: adeverteuil
Functions: ls
1

You may also use the $(which foo) variant instead of backticks. I personnaly have an alias ll='ls -l'.