Commands by jasonm23 (0)

  • …
    bash: commands not found

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. 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.

Share Your Commands

Check These Out

Prints a file leaving out all blank lines and comment-only lines
Does not print any line that either: - is empty - contains only spaces or tabs - starts with # - starts with spaces/tabs followed by a #

search installed files of package, that doesn't remember his name well. On rpm systems
rpm, sometimes, is not wildcard friendly. To search files installed from package this could be useful. change PACKAGENAME to any package do you want to search

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Read almost everything (Changelog.gz, .tgz, .deb, .png, .pdf, etc, etc....)
It allows customizing by means of lesspipe. You need to write a ~/.lessfilter script and put this into your ~/.bashrc: eval $(lesspipe) export LESS=-r

Calculate N!
Same as the seq/bc solution but without bc.

Draw kernel module dependancy graph.
parse `lsmod' output and pass to `dot' drawing utility then finally pass it to an image viewer

check open ports without netstat or lsof

To print a specific line from a file
You can get one specific line during any procedure. Very interesting to be used when you know what line you want.

Erase CD RW

Fibonacci With Case
Returns the '$1'th Fibonacci number.

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: