def usage():
    print((('Usage: ' + sys.argv[0]) + ' -j json_file [-c nginx_ conf] [-s schema_file] [-t] [-v] [-h]'))
    print('  options:')
    print('    -j json_file      : JSON file (required option)')
    print('    -c nginx_conf     : Nginx config file (default: /etc/nginx/nginx.conf)')
    print('    -s schema_file    : JSON schema file')
    print("    -t                : Test Nginx config file by command '/usr/sbin/nginx -t -c <nginx.conf>'")
    print('    -v                : Version')
    print('    -h                : Show this help page')
def usage():
    print((('Usage: ' + sys.argv[0]) + ' -j json_file [-c nginx_ conf] [-s schema_file] [-t] [-v] [-h]'))
    print('  options:')
    print('    -j json_file      : JSON file (required option)')
    print('    -c nginx_conf     : Nginx config file (default: /etc/nginx/nginx.conf)')
    print('    -s schema_file    : JSON schema file')
    print("    -t                : Test Nginx config file by command '/usr/sbin/nginx -t -c <nginx.conf>'")
    print('    -v                : Version')
    print('    -h                : Show this help page')