把系统升级了之后(有的时候更新系统也许也会遇到),发现使用shell,运行时会有报错:Syntax error: Bad for loop variable。仔细查看语法,并没有问题。后来才知道原因: 代码对于标准bash而言没有错,因为Ubuntu为了加快开机速度,用dash代替了传统的bash,是dash在捣鬼。 解决方法是取消dash: sudo dpkg-reconfigure dash 在选择项中选No,即可。
add.sh: 4: Syntax error: Bad for loop variable 代码没有错误,Ubuntu为了加快开机速度,用dash取代bash。 解决的方法:取消dash,使用bash: sudo dpkg-reconfigure dash 选择No选项。
Example 4: Using C-Style Syntax #!/bin/bash # C-style for loop, which is not avaiable in /bin/sh for ((i = 1; i <= 5; i++)) do echo "Number $i" done 1. 2. 3. 4. 5. 6. 7. You can save any of these scripts to a file (e.g.,script.sh), make it executable w...
add.sh: 4: Syntax error: Bad for loop variable 代码没有错误,Ubuntu为了加快开机速度,用dash取代bash。 解决的方法:取消dash,使用bash: sudo dpkg-reconfigure dash 选择No选项。
Basic structure of the for loop First, let's talk about the basic structure of aforloop, and then we'll get into some examples. The basic syntax of aforloop is: for <variable name> in <a list of items>;do <some command> $<variable name>;done; ...
PowerShell 复制 $i=1 for (;;$i++) { Write-Host $i } 此语句仍将无限期重复,直到你按 Ctrl+C 中断命令。 可使用一个条件来终止 for 循环。 可使用 语句的 Condition 部分放置条件for。 当条件的计算结果为 for 时,$false 循环会终止。 在下例中,for 循环将在 $i 的值小于或等于 10 时运行...
PowerShell $users|ForEach-Object-Parallel{Set-ADUser$user-Department"Marketing"} 默认情况下,-Parallel 参数支持一次处理五个项。 可以使用 -ThrottleLimit 参数将其修改为更大或更小的值。 下一单元: 查看并使用 Windows PowerShell 脚本中的 If 构造 ...
ShellCheck - A shell script static analysis tool ShellCheck is a GPLv3 tool that gives warnings and suggestions for bash/sh shell scripts: The goals of ShellCheck are To point out and clarify typical beginner's syntax issues that cause a shell to give cryptic error messages. ...
execute_script 'mobile: <methodName>', { arg1: 'value1', arg2: 'value2', } // Dotnet object result = driver.ExecuteScript("mobile: <methodName>", new Dictionary<string, object>() { {"arg1", "value1"}, {"arg2", "value2"} }); mobile: shell Executes the given shell command ...
PowerShell offers a very good dotNet and OS integration. MiniRobot offers an effective mnemonic syntax with powerful commands to control the UI. I mean each language has advantages and disadvantages. Take your language decision in dependent to your problem or mix the languag...