![]() ![]() ![]() By listing information such as what ports are open, you can then seal the gaps in your security plan by closing those ports if possible. Have you ever wondered from a networking perspective, what ports were open on various nodes of your network? Nmap allows you to quickly scan networks for open ports, application version information, running services, what operating system and version, what type of packet filters and firewalls are in use, and plenty of other useful and sensitive information. You would use this to determine if a process is hung or hogging all the resources of your system prior to simply killing a pid at random. Summary is the first portion you’ll see followed by the fields and columns header and then the task area. ![]() This is useful for telling if something is holding up your systems resources. The command top displays a list of processes or threads currently being used by the system kernel. We asked several of our enterprise architects on the team what their favorite tools and commands were and here are some of the results: 1. There are lots of commands when it comes to CentOS and any tool that saves time and provides utility is a welcome addition to any person’s tool kit. In this blog, we go over some of the most useful CentOS commands and tools as chosen by our enterprise architects, then provide a list of common commands. If you're just getting started with CentOS, learning the commands and tools is a big help in increasing your productivity. ![]()
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