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.

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



Edit a file using vi or vim in read-only mode

Terminal - Edit a file using vi or vim in read-only mode
vi -R filename
2009-03-04 06:56:40
User: haivu
Functions: vi
Edit a file using vi or vim in read-only mode

The -R flag prevents you from making changes to a file, useful when you only want to view the file. This command is nicer than the 'more' or 'less' commands because for source codes, vi shows syntax highlight.


There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

There is also ccze that does coloring, very nice for logs or such.

Comment by CodSpirit 377 weeks and 4 days ago

"view filename" should work fine too.

Comment by OJM 377 weeks and 3 days ago

OJM: I know about the view command, but for the Linux system at work, view does not do syntax coloring.

Comment by haivu 377 weeks and 3 days ago

unixmonkey, in view, try :syntax on

maybe there's a config file for this

Comment by jcgam69 377 weeks and 3 days ago

jcgam69: Yes, I know about syntax on and it did not work, at least with the my Linux distro, which is derived from Red Hat's

Comment by haivu 377 weeks and 3 days ago

Your point of view

You must be signed in to comment.