Hide

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.

If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

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

OpenID
or
Sign in Register

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

Hide

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:

Hide

News

2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.
Hide

Tags

Hide

Functions

Hide

Credits

Site by David Winterbottom (user root).

A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram

Terminal - A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram
sudo dd if=/dev/mem | cat | strings
2009-02-09 18:29:33
User: logik
Functions: cat dd sudo
53
Up
Down
A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram
Add to favourites | Report as malicious

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
sudo strings /dev/mem
2009-08-09 02:07:26
User: point_to_null
Functions: strings sudo
Tags: Linux ram strings /dev/mem
19
Up
Down
A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram

cat? dd? RTFM

Comments (1) | Add to favourites | Report as malicious
strings /dev/mem|less
2009-08-09 00:56:06
User: fraktil
Functions: strings
Tags: Linux ram strings /dev/mem
5
Up
Down
A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram
Comments (0) | Add to favourites | Report as malicious

Know a better way?

If you can do better, submit your command here.

What others think

Very cool! Thanks logik

Comment by Williebee 227 weeks and 1 day ago

don't think the cat is needed... or the dd... strings /dev/mem should work fine.

Comment by wwest4 227 weeks and 1 day ago

cat is not needed.

Comment by scottix 226 weeks and 4 days ago

strings /dev/mem | grep "llama"

Comment by jbcurtis 226 weeks and 2 days ago

This looks like it came from my site: http://www.nixtutor.com/linux/general-troubleshooting-in-linux/

But never the less awesome command. :)

Comment by marcrosoft 225 weeks and 4 days ago

never thought of this!

Comment by zubb 224 weeks and 3 days ago

The fact that my bios branding pops up in my ram 15 times vaugely irks me....

I wonder what would happen if I removed them?

# sudo perl -pi.bk -e's/Phoenix//g'

That sounds more entertaining than the shutdown command right now.

Comment by clockworkavian 220 weeks and 1 day ago

Is this really possible on linux to read /dev/mem from non privilegied user?

In FreeBSD you can't read the file if you user doesn't belong to the kmem group:

%head /dev/mem

head: /dev/mem: Permission denied

%ls -lh /dev/mem

crw-r----- 1 root kmem 0, 32 Dec 5 18:39 /dev/mem

Comment by Dereckson 132 weeks and 1 day ago

Your point of view

You must be signed in to comment.

Related sites and podcasts