system_nm() needs to be able to submit commands to the terminal for
NMproject to function. This function tests whether meaningful output can be
produced and is only intended for diagnostic purposes.
Usage
system_nm_available(fail_if_false = FALSE)
Value
Logical TRUE or FALSE.
Arguments
fail_if_false
Logical (default = FALSE). Should the function return
an error message if system_nm() is not available.