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Configure Services in CentOs5/RHEL5

1) List All services

2)  List Running services at Runlevel 3

3) Start service

4)      Stop service

5)   Start service on different RunLevel

6)  Restart services

7)  Add services

8 ) Remove Services

CentOS5/RHEL5 User Administration

1) Add User

2)      Delete user

3)      Modify user

4) Add Group

5) Delete group

6) Modify group

7) Add User to Group

Use useradd command to add new users to existing group (or create a new group and then add user). If group does not exist, create it. Syntax:

Syntax:

useradd -G {group-name1},{group-name2} username (for secondary group)

useradd -g {group-name} username (for primary group)