Commands by johnquail (3)

  • This command will: 1. open an SSH tunnel to 2. go to background 3. wait for 10 seconds for the connection 4. during the 10 seconds wait it will localy run 'rdesktop' to connect to the remote host through the created SSH tunnel. Password-less log in can be achieved (when server allows it) by adding '-p ' to the 'rdesktop' command


    12
    ssh -f -L3389:<RDP_HOST>:3389 <SSH_PROXY> "sleep 10" && rdesktop -T'<WINDOW_TITLE>' -uAdministrator -g800x600 -a8 -rsound:off -rclipboard:PRIMARYCLIPBOARD -5 localhost
    johnquail · 2011-07-14 05:48:06 15
  • This command 1. SSH into a machine 2. Tunnels VNC port to your local computer ("-L 5900:localhost:5900") 3. Runs a single use vnc server ("x11vnc -safer -localhost -nopw -once -display :0") 4. Goes into the background ("-f") 5. Runs VNC viewer on the local computer connecting to the remote machine via the newly created SSH tunnel ("vinagre localhost:5900")


    22
    ssh -f -L 5900:localhost:5900 your.ssh.server "x11vnc -safer -localhost -nopw -once -display :0"; vinagre localhost:5900
    johnquail · 2010-12-29 08:41:10 10
  • The linux package imagmagick is required for this command


    8
    convert -adjoin -page A4 *.jpeg multipage.pdf
    johnquail · 2009-03-12 14:49:18 9

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

Compress blank lines in VIM
This command will squeeze all consequent blank lines (including those with only space and tab charactes) to one. It will also empty the resulting line (remove the "|s/.*//" part if you don't need that).

function to compute what percentage of X is Y? Where percent/100 = X/Y => percent=100*X/Y
This function make it easy to compute X/Y as a percentage. The name "wpoxiy" is an acronym of "what percentage of X is Y"

Create a bunch of dummy text files
Avoiding a for loop brought this time down to less than 3 seconds on my old machine. And just to be clear, 33554432 = 8192 * 4086.

create directory and set owner/group/mode in one shot

bulk rename files with sed, one-liner
Far from my favorite, but works in sh and with an old sed that doesn't support '-E'

Burn a directory of mp3s to an audio cd.
This uses mpg123 to convert the files to wav before burning, but you can use mplayer or mencoder or ffmpeg or lame with the --decode option, or whatever you like.

Nicely display mem usage with ps
Nicely display mem usage with ps.

Find Duplicate Files (based on size first, then MD5 hash)
Finds duplicates based on MD5 sum. Compares only files with the same size. Performance improvements on: $find -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate The new version takes around 3 seconds where the old version took around 17 minutes. The bottle neck in the old command was the second find. It searches for the files with the specified file size. The new version keeps the file path and size from the beginning.

remove oprhan package on debian based system

First pass dvd rip... The set of commands was too long, so I had to separate them into two.
This set of commands will rip a dvd title using a 2 pass mencoder xvid encode. It will provide a great quality rip. It will rip as close to 700MB as possible. (note the bitrate of -700000) Enjoy!


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: