Apache Module mod_env
This module allows for control of the environment that will
be provided to CGI scripts and SSI pages. Environment variables
may be passed from the shell which invoked the httpd process.
Alternatively, environment variables may be set or unset within
the configuration process.
Specifies one or more environment variables to pass to CGI
scripts and SSI pages from the environment of the shell which
invoked the httpd process.
Sets an environment variable, which is then passed on to CGI
scripts and SSI pages.
SetEnv SPECIAL_PATH /foo/bin
Removes one or more environment variables from those passed
on to CGI scripts and SSI pages.