我去自助餐厅吃早餐，当我回来时，我发现我的锁屏没有褪色，好像它在过去 5 分钟内被访问过。
有关键字“guest”的日志文件片段：
Ma?May 21 10:24:44 machine-12 groupadd[3518]: group added to /etc/group: name=guest-cA5vc1, GID=126 ?nd
ic?May 21 10:24:44 machine-12 groupadd[3518]: group added to /etc/gshadow: name=guest-cA5vc1 ?co
ns?May 21 10:24:44 machine-12 groupadd[3518]: new group: name=guest-cA5vc1, GID=126 ?
Ma?May 21 10:24:44 machine-12 useradd[3522]: new user: name=guest-cA5vc1, UID=115, GID=126, home=/, shell=/bin/bash ?
Ma?May 21 10:24:44 machine-12 usermod[3527]: change user 'guest-cA5vc1' password ?
Ma?May 21 10:24:44 machine-12 chage[3532]: changed password expiry for guest-cA5vc1 ?
Ma?May 21 10:24:44 machine-12 chfn[3535]: changed user 'guest-cA5vc1' information …