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# System prepended metadata

title: '`sudo chmod 777 -R /usr` Problem'
tags: [problem solution]

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# `sudo chmod 777 -R /usr` Problem
###### tags: `problem solution`

[解决普通用户sudo时出现/usr/bin/sudo must be owned by uid 0 and have the setuid bit set](https://www.cnblogs.com/silentdoer/p/8946946.html)

If you forget root password:
[su Authentication failure解决方法](https://blog.csdn.net/ACK_ACK/article/details/106320127)

[WSL2 的 /etc/sudoers 文件改错后：/etc/sudoers: syntax error near line 30](https://blog.csdn.net/Tangramor/article/details/120358727)
[How to change default user in WSL Ubuntu bash on Windows 10](https://askubuntu.com/questions/816732/how-to-change-default-user-in-wsl-ubuntu-bash-on-windows-10)
![](https://i.imgur.com/UwBX8O2.png)


[sudo: error in /etc/sudo.conf, line 0 while loading plugin 'sudoers_policy'](https://blog.csdn.net/lileihappy/article/details/79214156)

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[zsh compinit: insecure directories and files, run compaudit for list.](https://github.com/zsh-users/zsh-completions/issues/433)
[zsh报错：_complete:96: bad math expression: operand expected at end of string](https://blog.csdn.net/Bronze5/article/details/109449532)