可以使用read命令来实现。read命令用于从标准输入读取用户输入的值,并将其赋给一个变量。 具体用法如下: ``` read variable_name ``` 其中,variable_name是...
read 内部命令被用来从标准输入读取单行数据。这个命令可以用来读取键盘输入,当使用重定向的时候,可以读取文件中的一行数据。
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echo"welcome root";;admin) echo"welcome admin";;default) echo"welcome default";;*) echo"no user $name"esac part2-4 综合到一起,制作一个简单的菜单功能 #!/bin/bashecho"script name: `basename $0`"echo"version 1.0"echo"date 2017-10-09"echo"Author: Tom"whileread -p"(h for help):"va...
批处理(Batch):用户事先写一个Shell脚本(Script),其中有很多条命令,让Shell一次把这些命令执行完,而不必一条一条地敲命令。 Shell脚本和编程语言很相似,也有变量和流程控制语句,但Shell脚本是解释执行的,不需要编译,Shell程序从脚本中一行一行读取并执行这些命令,相当于一个用户把脚本中的命令一行一行敲到Shell提示...
bash script 编程基础 1.何谓shell script shell script是利用shell的功能写一个“程序”,这个程序是使用纯文本文件,将一些shell的语法与命令写在里面。2.脚本或程序源文件都是纯文本文件。3.脚本或程序的执行一般有两种方式: 编译执行:预处理-->编译-->汇编-->链接;编译执行是一种计算机语言的执行方式。
forfile in $@; do lines=$(wc -l $file | cut -d' ' -f1) echo "$file has $lines line(s)." done echo"Total files: $#." 练习:写一个脚本 (1)传递两个以上字符串当作用户名; (2)创建这些用户;且密码同用户名; (3)总结说明共创建了几个用户; ...
Paste a shell script onhttps://www.shellcheck.netfor instant feedback. ShellCheck.netis always synchronized to the latest git commit, and is the easiest way to give ShellCheck a go. Tell your friends! From your terminal Runshellcheck yourscriptin your terminal for instant output, as seen above...
stocks update or stocks -u This will clone the repository and install the new versions of scripts that were installed, if you didn’t install a certain tool this script will not install the new version of that tool.UninstallingAUR pacman -Rns bash-snippets # or bash-snippets-git APT...
Let’s take a look at how you can enter a string value by using the read command and make the script compare two string values from different variables:#!/bin/bashecho “Enter a number” read a #The user input in this command line will be stored as variable ab=50 #The value of ...