how do you pass parameters into string variables in powershell

Question

I am running a command to add machines to the domain and it all works ok.

I now want to take the values in $string1 from parameters values, is there a way of doing this?

$rg = "resourcegroup"
$machines = Get-AzureRmVM -ResourceGroupName $rg

$string1 ='{
  "Name" : "domain.local",
  "User": "domain.local\\domainadmin",
  "Restart" : "true",
  "Options" : "3",
}'

$string2 = '{"Password" : "@@@@@@@@@@@@@B"}'

$machines | ForEach { Set-AzureRmVMExtension -ResourceGroupName $rg
  -ExtensionType "JSONADDomainExtension" -Name "joindomain"
  -Publisher "Microsoft.Compute" -TypeHandlerVersion "1.0" -VMName $_.Name
  -Location "uk west" -SettingString $string1 -ProtectedSettingString $String2 }

thanks but i need to pass parameters into the $string1 above, I know how to set up parameters etc just need to know how to pass them into the example above — itye1970
– itye1970, Commented Apr 13, 2018 at 13:39

Joey · Accepted Answer · 2018-04-13 14:24:16Z

1

Build a custom object and convert it to JSON. That way you stay clear of any and all escaping issues and since the input is actual PowerShell code, it's trivial to change any part of the object:

[pscustomobject] @{
  Name = 'domain.local'
  User = 'domain.local\domainadmin'
  Restart = 'true'
  Options = '3'
} | ConvertTo-Json

yields the following:

{
    "Name":  "domain.local",
    "User":  "domain.local\\domainadmin",
    "Restart":  "true",
    "Options":  "3"
}

answered Apr 13, 2018 at 14:24

Joey

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lit · Accepted Answer · 2018-04-13 14:16:54Z

0

The trick appears to be to escape the curly braces by doubling them.

$string1 ='{{
  "Name" : "{0}",
  "User": "{1}",
  "Restart" : "{2}",
  "Options" : "{3}"
}}' -f 'domain.local', 'domain.local\\domainadmin', 'true', '3'

answered Apr 13, 2018 at 14:16

lit

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henrycarteruk · Accepted Answer · 2018-04-13 14:17:06Z

0

Just concatenate the strings and parameter variables:

param (
    [string]$name
)


$string1 ='{
  "Name" : "' + $name +'",
  "User": "domain.local\\domainadmin",
  "Restart" : "true",
  "Options" : "3",
}'

answered Apr 13, 2018 at 14:17

henrycarteruk

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