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Update time.md #441

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Nov 1, 2022
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Update time.md #441

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2 changes: 1 addition & 1 deletion command/time.md
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Expand Up @@ -36,7 +36,7 @@ sys 0m0.007s
* user时间是指进程花费在用户模式中的CPU时间，这是唯一真正用于执行进程所花费的时间，其他进程和花费阻塞状态中的时间没有计算在内。
* sys时间是指花费在内核模式中的CPU时间，代表在内核中执系统调用所花费的时间，这也是真正由进程使用的CPU时间。

shell内建也有一个time命令，当运行time时候是调用的系统内建命令，应为系统内建的功能有限，所以需要时间其他功能需要使用time命令可执行二进制文件`/usr/bin/time`。
shell内建也有一个time命令，当运行time时候是调用的系统内建命令，因为系统内建的功能有限，所以需要时间其他功能需要使用time命令可执行二进制文件`/usr/bin/time`。

使用`-o`选项将执行时间写入到文件中：

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