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 …

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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 »

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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 »

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