服务器被攻击，查找文件用root都没有权限,这咋搞

Question

ubuntu@VM-45-197-ubuntu:~$ su root
Password:
root@VM-45-197-ubuntu:/home/ubuntu# cd
root@VM-45-197-ubuntu:~# find / -name index.php
find: ‘/var/lib/lxcfs/cgroup/memory/memory.pressure_level’: Permission denied
find: ‘/var/lib/lxcfs/cgroup/memory/memory.force_empty’: Permission denied
find: ‘/var/lib/lxcfs/cgroup/memory/cgroup.event_control’: Permission denied
find: ‘/var/lib/lxcfs/cgroup/memory/init.scope/memory.pressure_level’: Permission denied
find: ‘/var/lib/lxcfs/cgroup/memory/init.scope/memory.force_empty’: Permission denied
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Answer 1

/usr/bin# 里面看看 find 命令的权限，没有x 就 chmod +x find