Terminals come out when you start learning programming. Have you often seen the description of Linux or UNIX in the job change conditions? I wondered what Linux is.
In conclusion, Linux is "one of the operating systems". (OS = the most important software for managing personal computers) OS is Windows and MacOS, and Linux introduced this time. Windows and MacOS are used for personal computers, but Linux is mainly used for the servers that make up the Internet.
Linux may also refer to the Linux kernel instead of the OS. Linux refers to software that plays the role of the basic functions of the OS.
The role of the Linux kernel is to manage hard disks and memory and to monitor connected devices.
I also examined the background of Linux. The OS called UNIX was born in the world in 1969, and Linux was developed from this UNIX. After that, multiple operating systems were developed from the Linux kernel.
MacOS is a BSD-based OS, so you can use UNIX commands in your terminal.