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

Function that counts recursively number of lines of all files in specified folders

Terminal - Function that counts recursively number of lines of all files in specified folders
count() { find $@ -type f -exec cat {} + | wc -l; }
2009-05-19 15:02:51
User: Keruspe
Functions: cat find wc
4
Function that counts recursively number of lines of all files in specified folders

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Find supports multiple paths already. You can omit the for loop so it's just:

find /first/path /second/path /file.txt -type f -exec cat {} \; | wc -l
Comment by rhythmx 379 weeks ago

Ok, modified, thx :)

Comment by Keruspe 379 weeks ago

I would recommend changing cat {} \; to cat {} +

Putting in the + uses only one cat command (or the minimum number possible)

Also, change $* to "$@" so that if any of the arguments have spaces, bash doesn't turn them into multiple arguments.

So, altogether, it becomes:

count() { find "$@" -type f -exec cat {} + | wc -l; }
Comment by goodevilgenius 379 weeks ago

Done, thanks for the "+" tips :)

Comment by Keruspe 379 weeks ago

Nice bash function. I was needing of something like this, thanks for share it.

Comment by danpos 345 weeks ago

Your point of view

You must be signed in to comment.