powershell - Powershell中的命令行参数

Question

因此，问题在于，当我运行基本脚本以简单反射(reflect)命令行中传递的内容时，参数并没有按照我期望的方式分开。

基本代码是:

write-host "`$args`[0`] = $args[0]"
write-host "`$args`[1`] = $args[1]"
write-host "`$args`[2`] = $args[2]"

如果我将脚本称为

./script apples oranges bananas

我懂了

$args[0] = apples oranges bananas[0]
$args[1] = apples oranges bananas[1]
$args[2] = apples oranges bananas[2]

如果重要的话，我将在Powershell 2.0中执行此操作

Answer 1

您需要像这样将变量包装到$(..)中:

write-host "`$args`[0`] = $($args[0])"
write-host "`$args`[1`] = $($args[1])"
write-host "`$args`[2`] = $($args[2])"

这适用于不是简单标量变量的任何表达式:

$date = get-date
write-host "day: $($date.day)"
write-host "so web page length: $($a = new-object Net.WebClient; $a.DownloadString('http://stackoverflow.com').Length)"
write-host "$(if (1 -eq (2-1)) { 'is one' } else {'is not'} )"