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).

How much RAM is Apache using?

Terminal - How much RAM is Apache using?
ps -o rss -C httpd | tail -n +2 | (sed 's/^/x+=/'; echo x) | bc
2009-07-31 15:15:08
User: ricardoarguello
Functions: echo ps sed tail
4
Up
Down
How much RAM is Apache using?

Display the amount of memory used by all the httpd processes. Great in case you are being Slashdoted!

Add to favourites | Report as malicious

Alternatives

There are 17 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Is this K bite, or K byte or what? :)

Comment by tiagocruz 240 weeks ago
man ps

...

rss RSS resident set size, the non-swapped physical memory that a task has used (in kiloBytes). (alias rssize, rsz).

...

Comment by ricardoarguello 240 weeks ago

See also: http://www.pixelbeat.org/scripts/ps_mem.py

Comment by pixelbeat 240 weeks ago

Depends on the version of ps as -C is not always for matching command names or even a valid option.

Comment by drizzt 240 weeks ago

or per pid:

ps -ylC httpd | awk '{print $8}' | sed '1d'

Comment by unixx 240 weeks ago

Estrange:

# ps -o rss -C httpd | tail -n +2 | (sed 's/^/x+=/'; echo x) | bc

1719572

So... 1719572 KB ~= 1679.26 MB?

# ./ps_mem.py | grep http

Private + Shared = RAM used Program

350.1 MiB + 7.2 MiB = 357.3 MiB httpd (201)

What's correct number? :/

Comment by tiagocruz 240 weeks ago

This worked best for me. But I don't have bc installed.

ps -ylC httpd | awk '{print $8}' | sed '1d' | awk '{ total += $1 }END{ print total }'

Comment by rkaneknight 11 weeks and 3 days ago

Your point of view

You must be signed in to comment.

Related sites and podcasts