Questions about: su

Who can execute ‘sudo’?We can run ‘/usr/sbin/visudo‘ to add/remove the list of users who can execute ‘sudo‘. $ sudo /usr/sbin/visudoA screen shot of ‘/usr/sbin/visudo‘ file, looks something like this: The sudo list looks like the below string, by def
suswitch user -- with no args provided, it switches (or attempts to switch) to root. Password authentication is required, unless you are already root. Examples:$ su # switches to root (requires root password)$ su bob # switches to bob (requires bob's
Linux System is much secured than any of its counterpart. One of the way to implement security in Linux is the user management policy and user permission. normal users are not authorized to perform any system operations