-Changing the prompt for the tcsh shell (optional)

1. first, be aware that you *do not need to change the prompt*. it is just a convenience to reflect the pwd in the prompt.
be sure and back up you old .cschrc file first so you can the delete the new one and start over if you mess up. .cshrc is a system file that runs on login every time:

cd ~
ls .cshrc
cp .cshrc .cshrc_back
ls .cshrc*

2. find out what shell you have (yours will be the tcsh shell for gl):

echo $SHELL 

3. edit the .cshrc file (use any text editor):

nano .cshrc

4. comment (#) out the old set prompt stuff (if there is any) and put in new commands. you can change the end character if you want. for example, below, it is set to > but you can use $ or anything else:

if ( $?prompt ) then  # shell is interactive. find this because the prompt stuff is inside this if block

... # bunch of stuff you do not mess with

# set prompt=">" 

# so the old prompt command is commented out above and you put in the new 2 lines below

set prompt="$cwd\n=>"  # $cwd is the same as pwd so this sets a prompt with the current path and then a >
alias cd 'cd \!*; set prompt="$cwd\n=>"'  # this changes the prompt path when you cd

endif # this ends the if block that started way up there

5. activate the prompt with the source command (instead of logging in again):

source .cshrc

6. you should see your new prompt. if you mess up, rename the .cshrc to something else and then rename the backup back to .cshrc and source it.  you can google 'changing the prompt for the tcsh shell' for more info.