PowerPoint Presentation

ĄEnvironment Variables

_similar to shell variables, but their values will propagate to children shells

_by convention, these variables are all upper-case (though it is not required)

_similarly, shell variables are generally all lower-case

_set environment variables using "setenv" (as opposed to the "set" command)

_without any parameters, the "setenv" command will display all variables

_the "setenv" command will only set or assign one variable at a time

_the format for the command to set a value is (without any '=' sign):

setenv VARIABLE value

"commands:

setenv MY_NAME Elvis

echo $MY_NAME

echo $path

echo $PATH

echo $HOME

setenv