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This article is about how only certain users can execute su commands. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Only specific users can execute su commands

# usermod-G wheel rocky

Now open / etc/pam.d/su PAM config file:

# vi / etc/pam.d/su

Append line as follows:

Auth required / lib/security/pam_wheel.so use_uid

OR

Auth required pam_wheel.so use_uid

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