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feat: a3
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Leo
2026-05-22 11:52:02 +02:00
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Passwords are stored in the /etc/shadow file, which is restricted to the root user.
A standard user cannot write to it directly. However, the passwd executable is owned by root and has the SUID permission set.
When a standard user runs passwd, the SUID bit tells the system to execute the program with the privileges of root,
giving the program the temporary permissions to update /etc/shadow