Set the current working directory
Get the current working directory
Set the current working directory
Get the current working directory
Returns the full path location of the provided executable file, rifling through the PATH as necessary.
Returns the provided 'def' value if the variable does not exist
Get all set environment variables as an associative array.
Returns the provided 'def' value if the variable does not exist
Get all set environment variables as an associative array.
clears the variable if value is null or empty
clears the variable, if value is null or empty
Returns an absolute version of the provided path, where cwd is used as the prefix.
Exposes the system Environment settings, along with some handy utilities