octave: Environment Variables
36.7 Environment Variables
==========================
-- : getenv (VAR)
Return the value of the environment variable VAR.
For example,
getenv ("PATH")
returns a string containing the value of your path.
See also: setenv XREFsetenv, unsetenv XREFunsetenv.
-- : setenv (VAR, VALUE)
-- : setenv (VAR)
-- : putenv (...)
Set the value of the environment variable VAR to VALUE.
If no VALUE is specified then the variable will be assigned the
null string.
See also: unsetenv XREFunsetenv, getenv XREFgetenv.
-- : STATUS = unsetenv (VAR)
Delete the environment variable VAR.
Return 0 if the variable was deleted, or did not exist, and -1 if
an error occurred.
See also: setenv XREFsetenv, getenv XREFgetenv.
-- : HOMEDIR = get_home_directory ()
Return the current home directory.
On most systems, this is equivalent to ‘getenv ("HOME")’. On
Windows systems, if the environment variable ‘HOME’ is not set then
it is equivalent to ‘fullfile (getenv ("HOMEDRIVE"), getenv
("HOMEPATH"))’
See also: getenv XREFgetenv.