Commands using namei (1)

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Diff on two variables
You got some results in two variables within your shell script and would like to find the differences? Changes in process lists, reworked file contents, ... . No need to write to temporary files. You can use all the diff parameters you'll need. Maybe anything like $ grep "^>" is helpful afterwards.

drop first column of output by piping to this
An advantage is that this doesn't modify remained string at all. One can change {0,1} with {0,n} to drop several columns

list files recursively by size

Command to logout all the users in one command
It's only to logout all other user's except "root"

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"

recursive transform all contents of files to lowercase
In this way it doesn't have problems with filenames with spaces.

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

Continuously show wifi signal strength on a mac
The closer to zero the better.Credit to TheSeb on macrumors: http://forums.macrumors.com/showthread.php?t=1289884

Recursively remove all subversion folders

Get your external IP address ( 10 characters long )
Shortest url to a external IP-service, 10 characters.


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