Linux file properties users, groups, permissions

Source: Internet
Author: User

The user of the Linux system is a sub-role, the user's role is identified by the UID and GID (that is, the system identifies the user's UID, GID, rather than the user user name), there is a UID is unique (the system is the same as the identity card) to identify the system user account (user name)

1, system administrator root of the Udi/gid are 0

2, the ordinary user (admin add), the default it Uid\gid is from 500--65535, the permissions are small, can only operate their own home directory files and subdirectories (note: Nobady Uid\gid is 65535)

3, System users (also known as virtual users), that is, the installation of the system is the default and non-login users, their uid\gid is from 1--499

The third row in the CAT/ETC/PASSWD is the UID, and the fourth row is the GID

Linux file properties users, groups, permissions

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.