ເພີ່ມ user ໃນ Cent OS

login ເຂົ້າໃນເຄື່ອງທີ່ຕ້ອງການແອດດ້ວຍສິດ root

# adduser username

ຕັ້ງລະຫັດຜ່ານ
# passwd username

ຈະຟ້ອງຂຶ້ນມາໃຫ້ໃສ່ລະຫັດ ໃສ່ໃຫ້ຄືກັນທັງສອງເທື່ອ
Changing password for user username.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.

ແອດໃສ່ໃນກຸ່ມ wheel, ຄ່າເລີ່ມຕົ້ນໃນ CentOS, ສະມາຊິກທີ່ຢູ່ໃນ wheel group ຈະມີ sudo privileges.

usermod -aG wheel username

ທົດລອງດ້ວຍການລອງລ໋ອກອິນຜ່ານ ຍູສເຊີ້ ທີ່ສ້າງຂື້ນໃຫມ່

su - username

ຫລັງຈາກນັ້ນກໍ່ລອງຄຳສັ່ງປະເພດທີ່ຕ້ອງການສິດ root

[root@Prime01 ~]# su - smsc

[smsc@Prime01 ~]$ ls /root
ls: cannot open directory /root: Permission denied

[smsc@Prime01 ~]$ sudo ls /root

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for smsc:
anaconda-ks.cfg
[smsc@Prime01 ~]$ exit
logout