Commands by jedahan

Commands by jedahan (4)

sorted by

Play a random [album/movie] two rows down

Good if you have your music like Artist/(Year) Album/Song
This is sample output - yours may be different.
-3

mplayer "$(find . -maxdepth 2 -mindepth 2 -type d | grep -v '^.$' | sort -R | head -n1)"/*

jedahan · 2011-03-15 01:19:59 0
List all authors of a particular git project

This should work even if the output format changes.
This is sample output - yours may be different.
18

git log --format='%aN' | sort -u

jedahan · 2010-01-07 18:55:21 3
List all authors of a particular git project

List everyone who committed to a particular project, listed alphabetically. To list by commits, add -n to the shortlog. Show Sample Output
This is sample output - yours may be different.
```
Foo Bar
Bob Barker
BBlum
```
4

git shortlog -s | cut -c8-

jedahan · 2010-01-07 18:04:01 1
Find the process you are looking for minus the grepped one

alias ps?='psg' for maximum hawtness. Works in bash or zsh. Show Sample Output
This is sample output - yours may be different.
```
`--> ps? urxvt
root   5850  0.0  0.0  74404  3812 ?        Ss   20:21   0:00 urxvt
root  25961  0.0  0.0  74388  3732 ?        Ss   20:34   0:00 urxvt
```
-5

psg() { ps aux | grep "[${1[1]}]${1[2,-1]}"; }

jedahan · 2009-09-07 04:37:11 3

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

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"

Remove invalid host keys from ~/.ssh/known_hosts

Useful if you have to tunnel ssh through a local port and it complains of the host key being different. Much easier than manually editing the file.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Send email with one or more binary attachments

This command uses mutt to send the mail. You must pipe in a body, otherwise mutt will prompt you for some stuff. If you don't have mutt, it should be dead easy to install.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Counting the source code's line numbers C/C++ Java

Count your source and header file's line numbers. This ignores blank lines, C++ style comments, single line C style comments. This will not ignore blank lines with tabs or multiline C style comments.

find an unused unprivileged TCP port

Some commands (such as netcat) have a port option but how can you know which ports are unused?

remove comments (even those starting with spaces), empty lines (even those containing spaces) in one grep command

useful for discarding even those comments which start with blanks or those empty lines which contain blanks

Find files with at least one exec bit set

Automatically skip bad songs in your MPD playlist.

Case insensitive. Also you can pull in the songs from a blacklist, one per line - while :; do (mpc current | grep -i -f blacklist.txt && mpc next); sleep 5; done

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:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by jedahan