DevOps/OS
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Portable Operating System Interface(POSIX)DevOps/OS 2020. 9. 21. 15:07
1. Overview The Portable Operating System Interface (POSIX) is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems. POSIX defines the application programming interface (API), along with command-line shells and utility interfaces, for software compatibility with variants of Unix and other operating systems. 2. Description Unix was s..
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Program, Process, and ThreadDevOps/OS 2020. 9. 19. 23:43
1. Overview 1.1 Program A program is a set of instructions and associated data that resides on the disk and is loaded by the operating system to perform some task. An executable file or a python script file are examples of programs. In order to run a program, the operating system's kernel is first asked to create a new process, which is an environment in which a program executes. A program is an..