set prompt="[ string here ]"

include with %x   .. inside quotes to add system settings, ie path, time, etc

%c  : current directory

%d  : day

%h  : some number

%l  : tty  terminal connection and port

%m  : machine name

%n  : login name

%p  : time (HH:MM:SSam/pm)

%t  : time (HH:MMam/pm)

%w  : month

%y  : year

%~  : display current path from home directory

%/  : display current path from root


examples:

set prompt="[%n@%m-%~]"   :  Will give you [loginId@machineName-~/currentpath]