import subprocess
# start sclang to check if file is executable
p = subprocess.Popen(['sclang', '/path/to/file.scd'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, err) = p.communicate()
p_status = p.wait()
if p_status == 0:
    r = re.findall('(ERROR)+', str(output), flags=re.IGNORECASE)
    if r:
        print('An ERROR occurred!')
    else:
        print('File is executable!')

fork{
    s.waitForBoot{
        { SinOsc.ar(400 * SinOsc.kr(9), 0, 0.5) }.play;
    };
    2.wait;
    0.exit;
}