Command: hostname explained I have seen a lot of people telling people to use the command hostname to get FQDN but almost none that have explained to junior people what the command actually does more than hostname -f. So I …

hostname command explained Read more »

Tagged with: , , , , , ,

This is a Junior System Administrator how to tutorial to help you download the latest nmap version. The tutorial continues on to a tutorial how to create your own yum repo that part are located here: How to create a …

Download latest nmap from nmap.org to use in local repo how to CentOS 6.x / RHEL 6.x Read more »

Tagged with: , , , , ,

This is an early junior System Administrator guide: This time I will show you how to create a local yum repository that you can use in your environment. First you need to create a directory to host your local yum …

How to create a local yum repo CentOS 6.x / RHEL 6.x Read more »

Tagged with: , , , , , ,

This is an early junior System Administrator guide to install nmap security scanner. That we will use for the upcoming nmap tutorials. This is a how to that installs the old version nmap 5.51 go to the yum totorial How …

How to install nmap security scanner for CentOS 6.x / RHEL 6.x Read more »

Tagged with: , , , , ,

This is a Junior Linux System Administrator how-to describing how you use nmap to scan for live devices within a network. Use nmap to scan alive hosts in the network range with the command: nmap -sP subnet/netmask [c-johsor@sesstl168 ~]$ nmap …

How to use nmap to scan the network for live hosts CentOS/RHEL Read more »

Tagged with: , , , , , , , ,

If you like to check if there is updates and what packages that you are able to get updates of you should use the command: sudo yum check-update [c-johsor@sesstl168 ~]$ yum check-update Loaded plugins: fastestmirror, refresh-packagekit, security Determining fastest mirrors …

Yum command: check-update before updating CentOS/RHEL Read more »

Tagged with: , , , , , , ,