commandN fi if else if else 语法格式: if condition then command1 command2 ... commandN else command fi if-elif-else 语法格式: if condition1 then command1 elif condition2 then command2 else commandN fi for 循环 for 循环
/bin/bashPOSITIONAL_ARGS=()#初始化一个空数组,用来存储位置参数while[[$#-gt0]];do#当命令行参数的数量大于0时,进入循环case$1in-e|--extension)#如果参数是这个,脚本会将紧随其后的参数(文件扩展名)保存在变量EXTENSION中EXTENSION="$2"shift # 跳过参数 shift # 跳过后面的值;;-s|--searchpath)#如...
关于命令行(command line)工具和终端(terminal)的概念,我们在「Python 教程」的开篇就简单介绍过了: 一开始对于 Terminal 这个东西理解困难的读者,可以把它想象成一个壳(shell),在这个壳里,你可以写命令(command),这些命令直接发给电脑,电脑收到特定命令会执行特定行为,比如打开、编辑、删除文档。 而Terminal 只是承...
awesome-osx-command-line:一份针对 OS X 命令行的更深入的指南。 Strict mode:为了编写更好的脚本文件。 shellcheck:一个静态 shell 脚本分析工具,本质上是 bash/sh/zsh 的 lint。 Filenames and Pathnames in Shell:有关如何在 shell 脚本里正确处理文件名的细枝末节。 Data Science at the Command Line:...
首先,Shell 是一个程序,提供一个与用户对话的环境。这个环境只有一个命令提示符,让用户从键盘输入命令,所以又称为命令行环境(commandline,简写为 CLI)。Shell 接收到用户输入的命令,将命令送入操作系统执行,并将结果返回给用户。本书中,除非特别指明,Shell 指的就是命令行环境。
This means that all command line applications will now automatically open in Windows Terminal. This blog post will go into how this setting is enabled, the journey of Windows Terminal along with its fan-favorite features, as well as give a hu......
Command-line subtitle editor written in BASH. The script generally works with srt (SubRip), but a few parameters work with sub (MicroDVD) subtitle files too. FEATURES Basic clean-up Shift time Convert fps Adjust time Synchronize subtitles ...
Get an easy-to-understand introduction to Bash, the powerful command-line shell and scripting language for Linux. With Bash scripting, you can automate repetitive tasks, manage system operations, and boost your overall coding productivity. Our Bash scripting cheat sheet is a quick guide to running...
Scriptable Prompt; You can customize the prompt dynamically with Lua scripts -- like in other shells -- but never before possible in cmd.exe! Colored Input Line; Your input is colored by context sensitive completion scripts. Command Line Editing Improvements; Clink supercharges the command line ...
The first line of every Bash script always includes a combination of#and!followed by the Bash shell path. The combination is known asshebang, and it provides an absolute path to the Bash interpreter. Subsequent lines in the script can include the following: ...