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Linux
The word "Linux" refers to an operating system kernel, which in practice is used in a lot of different operating systems. These could be broadly divided between GNU/Linux and various other Linux distributions that do not use GNU operating system components (e.g., Android). The focus here will generally be GNU/Linux-derived OSes. This provides a general overview of some of the commands. It is strongly recommended you refer to your Linux distribution's documentation for details.
Finding OS and network information
Some ways to find basic information about your Linux-based host. Reasonably universal commands below:
| Explanation | |
|---|---|
| Get CPU information | |
| See how much RAM you have | |
| Print motherboard information | |
| Print information about the PCI bus and what is connected to it |
init and process control
This is achieved differently on different systems, but the most common method on Linux-based operating systems is now systemd.
Virtualization
Different distributions using the Linux kernel have varying virtualization methods. KVM is the most universal method.