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apt install and update commands need the read and write of root or administrators. but it does not work now.

$ sudo 
sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
$ su
Password: 
su: Authentication failure
waltinator
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CY Zhung
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    What did you change on your system? – Organic Marble Jul 13 '22 at 01:52
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    You've provided no OS & release details; but your issue is likely the consequence of some mistake you've made, corrupting file meta data with a `chmod`, changed mounts etc, of which you've provided no details on your *unstated* OS/release. – guiverc Jul 13 '22 at 02:11
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    This error hints that you broke your system by doing a system-wide ownership change. Did you? Reinstall and don't do it again. – waltinator Jul 13 '22 at 03:08
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    Does this answer your question? [/usr/bin/sudo must be owned by uid 0 and have the setuid bit set](https://askubuntu.com/questions/452860/usr-bin-sudo-must-be-owned-by-uid-0-and-have-the-setuid-bit-set) – karel Jul 14 '22 at 14:40

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