Why "passwd," "chsh," "su," and "sudo" commands need to be set-uid programs?

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Social Studies

Solomon

6 March, 22:10

Why "passwd," "chsh," "su," and "sudo" commands need to be set-uid programs?

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Ariel Mejia · Answer 1

The "passwd," "chsh," "su," and "sudo" commands need to be set-uid programs because permission is required to change the password.

In case the passwd, chsh, su and sudo commands are not setuid programs, then a user (other than theroot user) will not be able to change the password or change a user’s login shell attribute, etc.