Commands by citypipe (0)

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how to find the active X (X11/xorg) username and DISPLAY variable
Requires consolekit (works in e.g. Ubuntu). Here x11-display is DISPLAY

Query well known ports list
Uses the file located in /etc/services

Insert a line for each n lines
specially usefull for sql scripts with insert / update statements, to add a commit command after n statements executed.

Keep one instance of an irc chat client in a screen session
This command attempts to attach to existing irssi session, if one exists, otherwise creates one. I use "irc" because I use different irc clients depending on what system I am working on. Consistency is queen.

list block devices
Shows all block devices in a tree with descruptions of what they are.

improve copy file over ssh showing progress
You set the file/dirname transfer variable, in the end point you set the path destination, this command uses pipe view to show progress, compress the file outut and takes account to change the ssh cipher. Support dirnames with spaces. Merged ideas and comments by http://www.commandlinefu.com/commands/view/4379/copy-working-directory-and-compress-it-on-the-fly-while-showing-progress and http://www.commandlinefu.com/commands/view/3177/move-a-lot-of-files-over-ssh

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"

Rip DVD to YouTube ready MPEG-4 AVI file using mencoder
Rip DVD to YouTube ready AVI file, using MPEG-4 video codec and MP3 audio codec. Resizes to 320x240 and deinterlaces as needed.

Get International Space Station sighting information for your city
This command outputs a table of sighting opportunities for the International Space Station. Find the URL for your city here: http://spaceflight.nasa.gov/realdata/sightings/

backup and remove files with access time older than 5 days.
create an archive of files with access time older than 5 days, and remove original files.

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