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.


Get involved!

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

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

Universal configuration monitoring and system of record for IT.
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

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!
Hide

Top Tags

Hide

Functions

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

Summarise the size of all files matching a simple regex

Terminal - Summarise the size of all files matching a simple regex
find /path/to/my/files/ -type f -name "*txt*" | xargs du -k | awk 'BEGIN{x=0}{x=x+$1}END{print x}'
2009-04-16 14:17:04
Functions: awk du find xargs
2
Summarise the size of all files matching a simple regex

Use the find command to match certain files and summarise their total size in KBytes.

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

This is becoming a greatest hit on commandlinefu. awk allows use of uninitialized variables, so you could write:

... xargs du -k | awk '{t+=$1} END {print t}'

Further, the job that xargs is doing can be done by find here using the multiple-args-per-invocation -exec option:

find $DIR -type f -name "*txt*" -exec du -k {} + | awk '{t+=$1} END {print t}'

The '{}' is where the filenames are put, and the '+' indicates to run du on many arguments at once. See 'man find' for more.

Comment by bwoodacre 399 weeks and 1 day ago

Looks like the best way to do this is to us the -c option of du to produce a grand total, taking the place of the awk summation part.

Comment by bwoodacre 391 weeks and 4 days ago

Assuming your version of du has a -c option of course (Solaris 10 bundled version doesn't).

Comment by unixmonkey3280 390 weeks and 1 day ago

Your point of view

You must be signed in to comment.