CentOS 7

Introductions
[1]
This Site consists of Notes, that Systemadministrators made in order not to forget the configurations.
[2]
If you ar not sure about a special command, checkout the Commands SINOPSIS Help-Page.
[3]
I will not have a responsibility to you if some troubles happens when you set the same configuration as this site. Please do with your own resposibility.
How to read examples
[4]
How to read examples of configurations on this site.
white words ⇒ words shown on terminal by system
pink words ⇒ short notes. these are not shown on terminal in real
green words ⇒ commands you need to input or words you need to write in files
# open with vi

[root@ns ~]#
vi /etc/group
# line 11:add a user name

wheel:x:10:root
,linux