I need to understand this code snippet that I found in .profile file
echo -en "\e[32;44m $(hostname) \e[m";echo -e "\e[m"
This snippet is used to print out the hostname of the system with a blue background and a green font.
To color your shell, you use special color escape sequences.
\e[ starts the color scheme,
32; will set the foreground color to green,
44 will set the background color to blue and
m will end it.
$(command) creates a new shell, executes command and returns the result (not the return value).
hostname returns the hostname of the current system.
\e[m will reset the coloring of the output.
From the echo manpage:
-n do not output the trailing newline -e enable interpretation of backslash escapes
IMHO your snippet could be simplified to
echo -e "\e[32;44m $(hostname) \e[m";
See the chapter 6.1 Colours of the BASH Prompt HOWTO for more details.
see http://en.wikipedia.org/wiki/Control_Sequence_Introducer for more more details