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 ...

留神，变量名和等号之间不能有空格，这或许和你了解的悉数编程言语都不相同。一同，变量名的命名须遵从如下规矩： 命名只能运用英文字母，数字和下划线，首个字符不能以数字开端。 中心不能有空格，能够运用下划线（_）。 不能运用标点符号。 不能 ...

One of the most powerful features of Unix and Linux is that using traditional command line tools, everything is a stream of bytes. Granted, modern software has blurred this a bit, but at the command ...

The shopt builtin offers 53 settings that can alter how bash behaves. Read this post and then refer to bash's man page to follow up on how these settings might work for you. If you haven’t tried it ...

Are you familiar with Huffman encoding? That’s where you pick shorter codes for more frequent letters. Morse code is the same way, in that the most-used letters are the shortest. [Matheus Richard] had ...

Once you’ve gained a solid understanding of Linux and mastered the various commands available, your next big win comes in the form of shell functions. Code wrapped in a function can be reused by your ...

If you don't love the shell you're using on your Linux system, change it! There are plenty, including bash, fish, ksh, tcsh, zsh. There are quite a few shells on Linux system and more that can be ...

Welcome back to Linux.Ars! We have some good stuff for you this week. Axel Liljencrantz has written a helpful introduction to the Friendly Interactive Shell (Fish), a unique and innovative command ...