我下载了 Lubuntu 的 ISO 文件，我认为它是 Ubuntu 的轻量级版本，成功安装在我从爷爷那里继承下来的旧笔记本电脑上，我已经用了一段时间，没有任何问题。然而，在过去三天里，它总是突然关机并打印出一些乱码命令：
编辑：
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$ chmod +x 3-square.py
chmod: changing permissions of '3-square.py': Read-only file system
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$ git push
error: update_ref failed for ref 'refs/remotes/origin/main': cannot lock ref 'refs/remotes/origin/main': Unable to create '/home/genius/Projects/alx-stuffs/alx-higher_level_programming/.git/refs/remotes/origin/main.lock': Read-only file system
Everything up-to-date
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$ sudo
usage: sudo -h | -K | -k | -V
usage: sudo -v [-ABkNnS] [-g group] [-h host] [-p prompt] [-u user]
usage: sudo -l [-ABkNnS] [-g group] [-h host] [-p prompt] [-U user]
[-u user] [command [arg ...]]
usage: sudo [-ABbEHkNnPS] [-r role] [-t type] [-C num] [-D
directory] [-g group] [-h host] [-p prompt] [-R
directory] [-T timeout] [-u user] [VAR=value] [-i | -s]
[command [arg ...]]
usage: sudo -e [-ABkNnS] [-r role] [-t type] [-C num] [-D directory]
[-g group] [-h host] [-p prompt] [-R directory] [-T
timeout] [-u user] file ...
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$ su
Password:
su: Authentication failure
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$ su
Password:
su: Authentication failure
genius@GeniusDPhil-hp250g1notebookpc:~/Projects/alx-stuffs/alx-higher_level_programming/0x06-python-classes$
现在我甚至无法做任何事。