gistfile1.py

if sys.platform.startswith('linux'):
    if os.geteuid() == 0:
        print 'DO. NOT. RUN. AS. ROOT.'
        sys.exit()
    else:
        print 'Welcome to Contrl, Linux user!'
elif sys.platform.startswith('darwin'):
    if os.geteuid() == 0:
        print 'DO. NOT. RUN. AS. ROOT.'
        sys.exit()
    else:
        print 'Welcome to Contrl, Mac user!'
        
# by the power of greyskull
if sys.platform.startswith('linux') or sys.platform.startswith("darwin"):
    if os.geteuid() == 0:
        print 'DO. NOT. RUN. AS. ROOT.'
        sys.exit()
    else:
        print 'Welcome to Contrl, {0} user!'.format(get_system_name())