AML/NYU VisLab Software - How-to - Path environment variables

How-To Add a Path to an Environment Variable

Paths:

PATH or path - list of locations of executable programs.
MANPATH - list of locations of man pages (to be read with the man command).
LD_LIBRARY_PATH - list of locations of shared libraries needed to compile a program.
INFOPATH - list of locations of gnu info pages (to be read with the info command or emacs).

How to Determine the Value of the Environment Variable:

Where to Add the Path:

The "path" variable can be added to your .cshrc file which is found in your home directory
(or to .cshrc.IRIX or .cshrc.SunOS - if your setup uses these files).
If you just added any of the following lines to your .cshrc,
you must run: source ~/.cshrc
in each open terminal in order that it takes effect there.
On any subsequent logins, this file will automatically be sourced.
You can also type any of the lines below on an open terminal.
This will cause the path to be accessible for the life of that terminal.

The /usr/local/lib/.system.cshrc File:

How to Add the Path:

Adding a path to your PATH environment variable
can be done in either of the following ways:
- set path = ($path /PathtoBeAdded)
- setenv PATH {$PATH}:/PathtoBeAdded
type: rehash
in your terminal the first time you reset the PATH variable.
This will add all the programs in the new directory to the list of executables.
To add a path to your MANPATH environment variable
- setenv MANPATH {$MANPATH}:/PathtoBeAdded
To add a path to your LD_LIBRARY_PATH environment variable
- setenv LD_LIBRARY_PATH {$LD_LIBRARY_PATH}:/PathtoBeAdded

Locations that should to be added to paths ( in order listed)