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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.
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

Commands by bw from sorted by
Terminal - Commands by bw - 6 results
for i in `cat /proc/net/ip_tables_names`; do iptables -nL -v --line-numbers -t $i ; done
2010-04-23 13:53:49
User: bw
Functions: iptables

show your current iptable rules from every available iptable table

svn diff --diff-cmd='meld' -r 100:BASE FILE
2010-03-31 11:27:20
User: bw
Functions: diff

If you like to view what has been changed between revision 100 and the BASE on FILE. Meld will give you a nice overview.

pdftk A=chapters.pdf B=headings.pdf C=covers.pdf cat C1 B1 A1-7 B2 A8-10 C2 output book.pdf
2010-03-02 16:04:50
User: bw
Functions: cat

The command shows the real power of the pdftk tool, you can do basically everything you want with multiple pdf's.

In the command a book is created from chapters, headings and covers.

dd if=/dev/sdc of=/dev/sdd conv=notrunc & while killall -USR1 dd; do sleep 5; done
2010-01-12 14:09:40
User: bw
Functions: dd killall sleep

The following command will clone usb stick inside /dev/sdc to /dev/sdd

Double check you got the correct usb sticks (origional-clone)with fdisk -l.

SOURCE: dd if=/dev/sda bs=16065b | netcat ip-target 1234 TARGET: netcat -l -p 1234 | dd of=/dev/mapper/laptop bs=16065b STATS on target: watch -n60 -- kill -USR1 $(pgrep dd)
2009-12-16 10:51:06
User: bw
Functions: dd kill watch

I wanted to create a copy of my whole laptop disk on an lvm disk of the same size.

First I created the logical volume: lvcreate -L120G -nlaptop mylvms

SOURCE: dd if=/dev/sda bs=16065b | netcat ip-target 1234

TARGET: nc -l -p 1234 | dd of=/dev/mapper/mylvms-laptop bs=16065b

to follow its process you issue the following command in a different terminal

STATS: on target in a different terminal: watch -n60 -- kill -USR1 $(pgrep dd)

(see http://www.commandlinefu.com/commands/view/4356/output-stats-from-a-running-dd-command-to-see-its-progress)

watch -n60 --kill -USR1 $(pgrep dd)
2009-12-16 10:35:28
User: bw
Functions: watch

if you start a large dd and forgot about statistics, but you still wonder what the progress is this command in an OTHER terminal will show you the way.

NOTE: the watch command by itself will not output anything

NOTE: the kill command will not kill the process