Shells and Environment Variables on Unix and Windows

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To find out which shell you are using run:
	 % ps
For example, if you see this:
         [changliu@p2 changliu]$ ps  
            PID TTY      TIME CMD
           8235 pts/16   0:00 bash
         [changliu@p2 changliu]$   
you are running bash.

	
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To set environment variables in csh, run:
	% setenv CVS_RSH ssh
	(here, the environment variable is CVS_RSH, its value will be "ssh")

		
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To set environment variables in bash, run:
	% export CVS_RSH=ssh
	(here, the environment variable is CVS_RSH, its value will be "ssh")
	

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To set an environment variable on Windows:

Right click on "My Computer", choose "Properties", choose 
"Advanced Tab", click on "Environment Varaibles". You need 
to restart the command prompt window after you change 
environment variable setting.

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To check the value of an environment variable, run:
	% env
or	% env | grep "CVS_RSH"		
or, on Windows, run:
	C:\>set
or 	C:\>set | grep JWSDP_HOME
Example:
D:\jwsdp-1.1>set | grep HOME
HOMEDRIVE=D:
HOMEPATH=\Documents and Settings\changliu
JAVA_HOME=D:\j2sdk1.4.1_02\

D:\jwsdp-1.1>

To automatically set environment variables every time you log on, modify files .login, .bash_profile, .cshrc, or .bashrc, depending on which shell you use.

	
-Chang Liu
Tue Apr 08 16:06:25 EDT 2003