FreeBSD is an operating system which has high security and performance standards.
It is used widely on production servers for companys, due to its reliability
How can i change the tcsh Shell Prompt?
First of all copy an example configuration file to your home directory:
cp /usr/share/skel/dot.cshrc ~/.cshrc
Now edit the config file suitable to your needs:
For example your default editor can be changed in this line of this config file:
setenv EDITOR vi
The default shell can be changed by bash:
pkg install bash
Bash is easy installable on FreeBSD.