Same as |system()|, but returns a |List| with lines (parts of output separated by NL) with NULs transformed into NLs. Output is the same as |readfile()| will output with {binary} argument set to "b", except that there is no extra empty item when the result ends in a NL. Note that on MS-Windows you may get trailing CR characters. To see the difference between "echo hello" and "echo -n hello" use |system()| and |split()|: echo system('echo hello')->split('\n', 1) Returns an empty string on error. Can also be used as a |method|: :echo GetCmd()->systemlist()