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Format ps command output
ps command gives the possibility to display information with custom formatting with the -o options followed by the format specifier list.

open two files side by side in vim (one window, two panes)

Compression formats Benchmark
See: http://imgur.com/JgjK2.png for example. Do some serious benchmarking from the commandline. This will write to a file with the time it took to compress n bytes to the file (increasing by 1). Run: $ gnuplot -persist

Extract your list of blocked images hosts from Firefox database
I use this to replicate my blocked images hosts list between work and home to keep my browsing ad-free.

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"

Create a system overview dashboard on F12 key
Command binds a set of commands to the F12 key. Feel free to alter the dashboard according to your own needs. How to find the key codes? Type $ read Then press the desired key (example: F5) $ ^[[15~ Try $ bind '"\e[15~"':"\"ssh su@ip-address\C-m""" or $ bind '"\e[16~"':"\"apachectl -k restart\C-m"""

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" }

shutdown pc in a 4 hours
you may as well use shutdown -h 18:32 to shutdown your machine at 18:32.

How To Get the Apache Document Root

Get windows IPv4 and nothing else
May be useful to get user's ip address over the phone, as users struggle to read through a long ipconfig result.


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