在计算机操作系统发展之初，便带有命令解释器（Command Interpreter），用于接受用户的命令，并解释它们，从而与计算机进行交互。受 CTSS 和 Multics 系统的影响，Dennis Ritchie 和 Ken Thompson 在设计 UNIX 系统的时候，并没有将命令解释器作为操作系统的一部分或特权 ...

Linux严格意义上说的是一个操作系统，我们称之为“核心（kernel）“ ，但我们一般用户，不能直接使用kernel。而是通过kernel的“外壳”程序，也就是所谓的shell，来与kernel沟通。 如何理解？为什么不能直接使用kernel？ 从技术角度，Shell的最简单定义：命令行解释 ...

Ever wondered why programming in Bash is so difficult? Bash employs the same constructs as traditional programming languages; however, under the hood, the logic is rather different. The Bourne-Again ...

AWK is a pattern-scanning and processing language that searches one or more files for records (usually lines) that match specified patterns. It processes lines by performing actions, such as writing ...

This article is reprinted from the book A Practical Guide to Linux Commands, Editors, and Shell Programming 3rd edition, with permission of the author and publisher ...

Semantics-driven static analysis could be used to improve the safety, correctness, and performance of Unix, Linux, and macOS shell scripts, researchers say. Semantics-driven static analysis is being ...

Microsoft's recent move to open-source its once Windows-exclusive PowerShell appears to paying off, with the language now popping up in the top 50 of the Tiobe index of the world's most popular ...

Who know it would be so easy to create programs from the command line?

You're using Linux every day—you may not just be realizing it. Every single time you enter a query on Google, scroll through your Facebook feed, or stream a video ...

Three years after releasing PowerShell Core for Linux and macOS, Microsoft has announced PowerShell 7, the newest version of PowerShell Core. Only in March, Microsoft released PowerShell Core 6.2 but ...