Powershell 脚本参数作为变量名

Question

I'm quite new to Powershell scripting and I have hit a bump where I obviously don't know how to ask Google the right question.

I am writing a script to be called from a system that only allows me to add a single parameter to the command line, but I in fact need more values to execute the script.

My idea is to build a variable for each possible parameter, and then use the variable going forward (Simplified):

$name1= "value1","value2","value3"
$name2= "value4","value5","value6"
$name3= "value7","vlaue8","value9"

foreach ($value in $nameX) { } 

and then call the script like: script.ps1 nameX

But how to convert the parameter into the name of the corresponding variable?

Or are there easier ways...?

Answer 1

You should be able to solve your problem with the Get-Variable cmdlet:

# The one and only argument passed: the name of a variable defined inside
# the script; e.g., 'name1'
$variableName = $args[0]

# Define the variables that the argument can refer to:
$name1= "value1","value2","value3"
$name2= "value4","value5","value6"
$name3= "value7","vlaue8","value9"

# Use Get-Variable to get a variable's value by name.
# (Error handling omitted for brevity.)
foreach ($value in (Get-Variable $variableName -ValueOnly)) { 
  # ...
}