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do something else while waiting for an event, such as reboot
until (ssh root@10.1.1.39 2> /dev/null); do date; sleep 15; done In this case will execute "date" then "sleep 15" until we are able to ssh into server, such as after a reboot Could also be like: until ( ping 10.1.1.39 1> /dev/null); do echo "server 10.1.1.39 is down"; sleep 15; done

Lists all usernames in alphabetical order

Transfer a file to multiple hosts over ssh
You can push files to up to 32 servers at once assuming ssh keys are in place. Great tool, it is part of the pssh suite.

Vlc ncurses mode browsing local directorys.

Command for JOHN CONS
Would create a file with a meaningful title. Dedicated to John Cons, who is annoying us users. Merry Christmas!!!

View internet connection activity in a browser
In addition to generating the current connections, it also opens then in your default browser on gnome.

open remote desktop connection without X
You can use it to connect to remote windows machine and start some scritps that need user login

Delete all files by extension
This is a correction to https://www.commandlinefu.com/commands/view/22134 Use `-name` instead of `-iname`, because case-sensitivity is probably important when we're dealing with filenames. It's true that extensions are often capitalised (e.g., "something.JPG"), so choose whatever's appropriate. However, what is appropriate is the quoting of the name pattern, so the shell doesn't expand it incorrectly. Finally, `-delete` is clearer.

Create a temporary file
To create directory, use: $ tempdir=$(/bin/mktemp -d)

Play radio stream with mplayer
Above command will play Virgin Radio Dubai


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