1.PID、TID的区分 uid是user id，即用户id，root用户的uid是0，0为最高权限， gid是group id，用户组id，使用 id 命令可以很简单的通过用户名查看UID、GID：~$ id bingyueuid=1000(bingyue) gid=1000(bingyue) groups=1000(bingyue)~$ id rootuid=0(root) gid=0(ro....

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