read variable_name 其中,variable_name是你自定义的变量名,用于保存用户输入的值。读取用户输入后,可以通过该变量名来获取输入的内容。 以下是获取用户输入的完整示例代码: 代码语言:txt 复制 #!/bin/bash echo "Please enter your name: " read name echo "Hello, $name! How are
它将标准输出写入 learnToScriptStandardOutput,标准错误信息写入 learnToScriptStandardError,二者共同都写入 learnToScriptAllOutput 文件。 复制 #!/bin/bash #As we know this article is about scripting. So let's #use what we learned in a script. ...
If the environment variable $XDG_CONFIG_HOME is present, it will place the nvm files there. You can add --no-use to the end of the above script to postpone using nvm until you manually use it:export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" ||...
get_free_fields(){free_fields=0# initialize the variablefornin$(seq1${#room[@]});doif[["${room[$n]}"="."]];then # checkifthe cells has initial valuedot(.),then count itasa free field.((free_fields+=1))fi done} 这里是印刷的雷区,[a-j ]是列,[0-9]是行。 创建玩家逻辑 玩...
If the environment variable $XDG_CONFIG_HOME is present, it will place the nvm files there. You can add --no-use to the end of the above script to postpone using nvm until you manually use it:export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" ||...
If yes, it returns the value of the variable. If no, it sets the variable. Azure CLI Copy if [ $resourceGroup != '' ]; then echo $resourceGroup else resourceGroup="msdocs-learn-bash-$randomIdentifier" fi Using If Then to create or delete a resource group The following script ...
The proper way to handle errors is to check if the program finished successfully or not, using return codes. It sounds obvious but return codes, an integer number stored in bash$?or$!variable, have sometimes a broader meaning. Thebash man pagetells you: ...
Version 3.7.2 2005/11/16 作者:Mendel Cooper mail:thegrendel@theriver.com 这本书假定你没有任何脚本或一般程序的编程知识,但是如果你有相关的知识,那么你将很容易 达到中高级的水平...all the while sneaking in little snippets of UNIX? wisdom and lor... ...
Aug 1, 2007 5:38 AM in response to snowmaninthesun Since your PATH variable is screwed up you'll have to use the full path to any command you want to run until you get the PATH fixed. Try this to open your .profile file: /usr/bin/open ~/.profile Also, in the meantime if...
/bin/bashforiinfile{1..3};doforxinweb{0..3};doecho"Copying$ito server$x"scp$i$xdonedone When you save and execute this script, the result is the same as running the nested loop example above, but it's more readable, plus it's easier to change and maintain....