看看你们的time命令输出是下面哪一种?
代码: 全选
real 0m0.000s
user 0m0.000s
sys 0m0.000s
代码: 全选
Usage: time [-apvV] [-f format] [-o file] [--append] [--verbose]
[--portability] [--format=format] [--output=file] [--version]
[--quiet] [--help] command [arg...]