The global PATH is defined in the /etc/profile file. Individual user's PATHs are defined in their respective home directory's .bash_profile file. To add more directories, append them to the "PATH=" line, separating each directory path with colons. For example, the original path statement might be:
Code:
PATH=$PATH:/usr:/usr/bin
If you wanted to add the directory /foo/bar, the resulting statement would look like this:
Code:
PATH=$PATH:/usr:/usr/bin:/foo/bar
You'll either have to type "export PATH", or log out and back in to have the change take effect.