CUSTOMIZE SHELL in LINUX

Most of us work with a shell prompt. By default most Linux distro displays hostname and current working directory. You can easily customize your prompt to display information important to you

\a -  an ASCII bell character (07)

\d -    the date in"Weekday Month Date "format (e.g."Tue May 26")

\D{format} - the format is passed to strftime(3) and the result is inserted into the prompt string; an empty format results in a locale-specific time representation.  The braces are required

\e  -  an ASCII escape character (033)

\h  -  the hostname up to the first `.'

\H  -  the hostname

\j  -  the number of jobs currently managed by the shell

\l  -  the basename of the shell's terminal device name

\n  -  newline

\r  -  carriage return

\s  -  the name of the shell, the base name of $0 (the portion following the final slash)

\t  -  the current time in 24-hour HH:MM:SS format

\T  -  the current time in 12-hour HH:MM:SS format

\@  -  the current time in 12-hour am/pm format

\A  -  the current time in 24-hour HH:MM format

\u  -  the username of the current user

\v  -  the version of bash (e.g., 2.00)

\V  -  the release of bash, version + patch level (e.g., 2.00.0)

\w  -  the current working directory, with $HOME abbreviated with a tilde (uses the value of the PROMPT_DIRTRIM variable)

\W  -  the basename of the current working directory, with $HOME abbreviated with a tilde

\!  -  the history number of this command

\#  -  the command number of this command

\$  -  if the effective UID is 0, a #, otherwise a $

\nnn - the character corresponding to the octal number nnn

\\ -  a backslash

\[  -  begin a sequence of non-printing characters, which could be used to embed a terminal control sequence into the prompt

\] -  end a sequence of non-printing characters

Customize shell:

PS1=”\d\T\n\u#”

Changing color of Terminal:
First go to Edit option from the upper menu and then Profile Preferences 

A new window will open now go to colors tab and change the color to what color you want for your terminal