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Install a basic FreeBSD system
Install a basic FreeBSD system on a distant server. I use this to install FreeBSD on servers that can only boot a Linux rescue system. This sytem loads on ram when booted, so it is possible to install freely. You can even install on ZFS root !

Take screenshots with imagemagick
Now try this. Ones you see small cross arrow, double click on any window you like to make a screenshot "selectively".

Find where a kind of file is stored
In this case searches for where .desktop files are stored. The resulted is a sorted list of the top directories containing such files.

Quickly re-execute a recent command in bash
! will expand to the last time you ran , options and all. It's a nicer alternative to ^R for simple cases, and it's quite helpful for those long commands you run every now and then and haven't made aliases or functions for. It's similar to command 3966, in some sense.

Install pip with Proxy
Installs pip packages defining a proxy

Type a random string into a X11 window
Just after you type enter, you have 3 seconds to switch window, then "texthere" will be "typed" in the X11 application that has focus. Very useful to beat your score at games such as "How fast can you type A-Z".

Fill up disk space (for testing)
Put into some file. No special purpouse, just for fun...

pretend to be busy in office to enjoy a cup of coffee
using seq inside a subshell instead of a bash sequence to create increments.

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" }

bash: hotkey to put current commandline to text-editor
* in bash-shell You can capture the current commandline to a text-editor: * simply press: CTRL+x+e * Your current commandline will pe put into Your default text-editor (export EDITOR=vim)


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