COP 4343 Unix System Administration Unit 4: system administrator create users/groups

System Administrator Tasks Setup/maintain systems Install software Create new user accounts Train users, help users solve problems Define procedures and policies Keep up with technical developments

Ethics and the System Administrator System administrators are trusted employees System administrators have access to valuable personal and business data Legal and ethical rules control work of a system administrator

User accounts user account types: every user belongs to group(s) root regular user special accounts every user belongs to group(s)

User accounts Login with userid and password ssh, login Assume superuser privilege su sudo visudo

User accounts 3 ways to create: edit system files useradd command family graphical utility

Create user accounts edit system files: additional tasks /etc/passwd /etc/group /etc/shadow additional tasks set password: passwd create user’s home directory default content

Create user accounts useradd command family useradd, userdel groupadd, groupdel /etc/skel directory