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April 2010
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Sudo error: sudo: must be setuid root

I got this error when I try to execute the sudo command from user terminal.

[anoop@rc-155 ~]$ sudo /etc/init.d/httpd restart sudo: must be setuid root

Solution:

The issue is with the file permission associate with sudo binary file.

#chown root:root /usr/bin/sudo #chmod 4111 /usr/bin/sudo

This should be work for you.