Commands by mtrgrrl (1)

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Capture video of a linux desktop

Remove all mail in Postfix mail queue.

Get Futurama quotations from slashdot.org servers

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

Make redirects to localhost via /etc/hosts more interesting
Normally when a site is blocked through /etc/hosts, traffic is just being redirected to a non-existent server that isn't going to respond. This helps get your point across a little more clearly than a browser timeout. Of course you could use any number of codes: http://en.wikipedia.org/wiki/List_of_HTTP_status_codes Obviously, this command can be added to init-rc.d, and more sophisticated responses can be given. Seems noteworthy to mention that the information sent from the browser can be parsed using the bash READ builtin (such as 'while read -t 1 statement; do parsing'), and the connection stays open until the script exits. Take care that you must use EXEC:'bash -c foo.sh', as 'execvp' (socat's method for executing scripts) invokes 'sh', not 'bash'.

Send a local file via email
This just reads in a local file and sends it via email. Works with text or binary. *Requires* local mail server.

Find the package that installed a command

How to speedup the Ethernet device
ethtool is used for querying settings of an ethernet device and changing them. In this example I setup 100 Mb/s full duplex on my Linux Box

Add a line from 1 file after every line of another (shuffle files together)
After every line in targetfile (empty lines included) insert in a line from addfile. "Save" results to savefile. Addfile should be longer than targetfile since this doesn't loop back to the top of addfile. /^/R addfile -- says for every line that matches "has a start of line" output a line from the file addfile. > savefile (optional) -- redirect output to savefile file.

generate 30 x 30 matrix
Replaces hexdump with the more succint xxd, and the sed was unnecessarily complex.


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