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kill some pids without specific pid
pgrep, pkill - look up or signal processes based on name and other attributes

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Get absolut path to your bash-script
Another way of doing it that's a bit clearer. I'm a fan of readable code.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Show allocated disk space:

Creates a SSHFS volume on MacOS X (better used as an alias). Needs FuseFS and SSHFS (obvioulsly).
To make it even more practical, make sure you can login to the ssh server using a keypair.

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"

Play ISO/DVD-files and activate dvd-menu and mouse menu clicks.

Download all images from a 4chan thread
first grep all href images then sed the url part then wget

extract element of xml


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