commands_to_know.txt

sort - Sorts standard input then outputs the sorted result on standard output.
uniq - Given a sorted stream of data from standard input, it removes duplicate lines of data (i.e., it makes sure that every line is unique).
grep - Examines each line of data it receives from standard input and outputs every line that contains a specified pattern of characters.
fmt - Reads text from standard input, then outputs formatted text on standard output.
pr - Takes text input from standard input and splits the data into pages with page breaks, headers and footers in preparation for printing.
head - Outputs the first few lines of its input. Useful for getting the header of a file.
tail - Outputs the last few lines of its input. Useful for things like getting the most recent entries from a log file.
tr - Translates characters. Can be used to perform tasks such as upper/lowercase conversions or changing line termination characters from one type to another (for example, converting DOS text files into Unix style text files).
sed - Stream editor. Can perform more sophisticated text translations than tr.
awk - An entire programming language designed for constructing filters. Extremely powerful.

echo $PS1
${debian_chroot:+($debian_chroot)}\u@\h:\w\$


Setup for lxde key bindings (and many other things):
/home/ran/.config/openbox/lubuntu-rc.xml

Colors for echo etc.:
Black        0;30     Dark Gray     1;30
Blue         0;34     Light Blue    1;34
Green        0;32     Light Green   1;32
Cyan         0;36     Light Cyan    1;36
Red          0;31     Light Red     1;31
Purple       0;35     Light Purple  1;35
Brown/Orange 0;33     Yellow        1;33
Light Gray   0;37     White         1;37

killall python

/bin       Essential command binaries
/boot      Static files of the boot loader
/dev       Device files
/etc       Host-specific system configuration
/lib       Essential shared libraries and kernel modules
/media     Mount point for removeable media
/mnt       Mount point for mounting a filesystem temporarily
/opt       Add-on application software packages
/sbin      Essential system binaries
/srv       Data for services provided by this system
/tmp       Temporary files
/usr       Secondary hierarchy
/var       Variable data