Commands by savagemike (1)

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Display rows and columns of random numbers with awk
Displays six rows and five columns of random numbers between 0 and 1. If you need only one column, you can dispense with the "for" loop.

list human readable files
include in the list human readable hidden files too: $ file .* *|grep 'ASCII text'|sort -rk2 more reliable command: $ ls|xargs file|grep 'ASCII text'|sort -rk2 and include hidden files: $ ls -a|xargs file|grep 'ASCII text'|sort -rk2

Console clock
Shows a simple clock in the console -t param removes the watch header Ctrl-c to exit

direct a single stream of input (ls) to multiple readers (grep & wc) without using temporary files

list processes with established tcp connections (without netstat)
Uses lsof to list open network connections (file descriptors), grepping for only those in an established state

clean up memory on linux
where proc filesystem mounted under /proc

Command line calculator
This opens a python command line. You can use math and random and float-division is enabled (without appending .0 to integers). I just don't know how to specify a standard precision.

Prevent shell autologout
Unset TMOUT or set it to 0 in order to prevent shell autologout. TMOUT is the number of seconds after which the present shell will be killed if it has been idle for that long.

Get your outgoing IP address

Remove leading zeros in multiple columns with sed
Leading zeros might help correct sorting and they can be removed by sed after sorting


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