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.

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:



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!

Top Tags



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

Copy public ssh Id to new host withtout bash redirection

Terminal - Copy public ssh Id to new host withtout bash redirection
cat .ssh/id_dsa.pub | ssh <HOST> "mkdir -p .ssh && tee -a .ssh/authorized_keys"
2012-10-11 12:12:45
User: Valise
Functions: cat ssh
Copy public ssh Id to new host withtout bash redirection


There are 8 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Why not use built in `ssh-copy-id` command?

Comment by linuxrawkstar 245 weeks ago

# 1 Does not set the permissions to the .ssh directory (700) or to the authorized_keys file (600).

Many SSH daemons are configured in such a way that permissions must be set in such a manner, else the files are ignored. While this may work great on a home linux box, it does not work for enterprise level *nix networks.

# 2 If the key is already present on the target , it will be duplicated. Again, fine for home use, but not enterprise.

As others have suggested, in the very least, use ssh-copy-id.

ssh-copy-id sets the permissions on the file properly if it does not exist. Unfortunately, it too will make duplicate copies if the key already exists.

I don't have a '1-liner' for this one.

What I do have is a 165 line function that resolves all of these issues and has a 'preview' mode. OFC, commandlinefu is not the place for such a function ;)

Comment by Zhoul 242 weeks and 6 days ago

Your point of view

You must be signed in to comment.