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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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.
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,…):
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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:
show your current iptable rules from every available iptable table
If you like to view what has been changed between revision 100 and the BASE on FILE. Meld will give you a nice overview.
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.
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.
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)
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