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check the filesystem and use a progress bar
if you happen to start with out the -C switch then you a killall -USR1 e2fsck

Indicates the position of my monitor buttons
I often need to change the brightness of my monitor. The symbols of the sensor buttons are not illuminated and on a black background .... invisible! Now i use osd_cat instead of a torch ;-)

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"

get all pdf and zips from a website using wget
If the site uses https, use: $ wget --reject html,htm --accept pdf,zip -rl1 --no-check-certificate https-url

Download streaming video in mms
require mimms package

Watch active calls on an Asterisk PBX
Works on asterisk 1.8.

Scan all open ports without any required program

Set all CPU cores' CPU frequency scaling governor to maximum performance

Pull Total Memory Usage In Virtual Environment
This command basically adds up all of the individual instances processes and gives you a grand total for used memory in that instance alone.

find string into one pdf file


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