更改用户UID

[root@hn-zz-c /home]$ ps -u OA0
PID TTY TIME CMD
802279 ? 00:00:00 systemd
802281 ? 00:00:00 (sd-pam)
802407 ? 00:00:00 sshd
802408 pts/1 00:00:51 bash
[root@hn-zz-c /home]$ usermod -u 1918 OA0
usermod: user OA02044 is currently used by process 802279
[root@hn-zz-c /home]$ pkill -u OA0
[root@hn-zz-c /home]$ ps -u OA0
PID TTY TIME CMD
[root@hn-zz-c /home]$ usermod -u 1918 OA0
[root@hn-zz-c /home]$ id OA02044
uid=1918(OA0) gid=1920(OA0) groups=1920(OA0)