sudoとsuルートが破損しています。

sudoを操作したり、rootを操作できないようです。私はデフォルトのシェルを変更したり、ルートパスワードを忘れたことに関連していたと思いました。

その後、回復モードでchmod 4755 /usr/bin/sudoを適用しましたが、何も修正されませんでした。

以下は問題の説明です。

~/scripts took 1m1s
❯ sudo reboot now
Failed to write reboot parameter file: Permission denied

~/scripts took 3s
❯ sudo ./houdini.sh
nice: cannot set niceness: Permission denied

~
❯ su root
Password:
This account is currently not available.

~/scripts took 8m35s
❯ sudo -u root ./houdini.sh

[root@fedora scripts]$ cd ..
bash: cd: ..: Permission denied
[root@fedora scripts]$ mount -o remount,rw /
mount: /: must be superuser to use mount.
       dmesg(1) may have more information after failed mount system call.


❯ grep ^root: /etc/passwd
grep: CGI: Is a directory
grep: Desktop: Is a directory
grep: dev: Is a directory
grep: Documents: Is a directory
grep: Downloads: Is a directory
grep: git: Is a directory
grep: houdini19.0: Is a directory
grep: houdini19.5: Is a directory
grep: Music: Is a directory
grep: omniverse:: Is a directory
grep: Omniverse: Is a directory
grep: output.txt: Permission denied
grep: Pictures: Is a directory
grep: Public: Is a directory
grep: scripts: Is a directory
grep: Templates: Is a directory
grep: tools: Is a directory
grep: Videos: Is a directory

❯ id root
uid=970(root) gid=0(root) groups=0(root)


❯ grep root: /etc/passwd
oot:x:0:0:root:/root:/bin/bash
operator:x:11:0:operator:/root:/sbin/nologin
root:x:970:0:Super User:/root:/usr/sbin/nologin

今はこれが心配です。

❯ sudo killall -u root

~
❯ sudo usermod -u 0 -o root
usermod: user root is currently used by process 100784 

（再実行するたびにプロセスが変更されます）