CIS 3355 Lecture Notes - Lecture 1: Sudo, Superuser, System Administrator

• School: University of Houston
• Department: Computer Information Systems
• Course: CIS 3355
• Professor: Miertschin Susan

Document Summary

Normal user accounts: are assigned to each person who uses the linux system. System user accounts: are used by applications that must run continually in the background. Administration user accounts: are used by system administrators. Accessing administrator privileges: three ways for a linux system administrator to become the root user account, log in as the root user account directly from a login prompt, use the su command as a normal user account. Use the sudo command as a normal user account. Example: $ sudo cat /etc/shadow [sudo] password for rich: root:! :16480:0:99999:7::: daemon:*:16273:0:99999:7::: bin:*:16273:0:99999:7::: sys:*:16273:0:99999:7::: the command prompt does not change to a pound (#) sign when you use. Each group is defined on a separate line in the file, which includes: the group name, a unique group id value, the list of user accounts that are members of the group. For example, to change the comment field for the user account, use: