sudo allow normal user to run commands as user root.
By default users in groups “sudo” and “admin” can use sudo on Debian/Ubuntu. On CentOS/RHEL group name is “wheel”.
You can edit sudo permissions for user/group with command
visudo store files in /etc/sudoers file.
Allow a normal user to run all commands with sudo
USERNAME_HERE ALL=(ALL:ALL) ALL
Replace USERNAME_HERE with actual username of the user you want to give sudo privileges. Another way is to add this user to group sudo, both are same.
Allow a normal user to use sudo with out password prompt
USERNAME_HERE ALL=(ALL:ALL) NOPASSWD: ALL
Allow a normal user to run specific command as user root
To allow user with name “hoston” to use mount command, add following in visudo
hoston ALL=(root) NOPASSWD: /bin/mount
Here NOPASSWD means user will not get any password prompt.