where can I find these two files if I want to modify them?
when I use echo $0 I receive
-tcsh but I found only
.bash_profile .bash_history .bash_logout, but not
They're in your home directory. Since they start with a "." character,
If your default shell is bash (which is typical for Linux), you may not have .cshrc or .login files -- those files are associated with csh.
If you're using csh or tcsh, but ~/.cshrc doesn't exist, it's possible that your environment is coming from a system-wide file, perhaps /etc/csh.cshrc or something similar. If you want to customize the settings for yourself, you can just create ~/.cshrc yourself if it's not already there, perhaps using the system-wide file as a starting point.
Files such as .bashrc or .bash_profile serve the same purpose for bash as .cshrc does for csh. .bash_history will contain a list of recently typed bash commands. .bash_logout contains commands to be run when you log out.
they should be on your home directory. just do a