我们创建的子进程有Sl+，小写的L我百度是克隆线程，这个克隆线程跟其它有什么区别？

来源：6-2 进程详解（下）

弱弱小乖乖

2019-02-17

ps -auxf | grep php 的结果，第二行有个状态是 Sl+

root     13675  0.0  1.6 384660 31816 pts/0    S+   18:18   0:00  |       \_ php process.php
root     13676  0.0  2.9 500116 56248 pts/0    Sl+  18:18   0:00  |           \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13677  0.0  0.2 425880  4892 pts/0    S+   18:18   0:00  |               \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13679  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13680  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13681  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13682  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13683  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13684  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13685  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php
root     13686  0.0  0.2 411944  5016 pts/0    S+   18:18   0:00  |                   \_ /usr/local/php/bin/php /var/www/swoole/07_process/../03_httpServer/http_server.php

为什么这个子进程是Sl+，其它都是S+ ？

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