Passing multiple values to a single PowerShell script parameter

Question

I have a script to which I pass server name s  in  args   This way I can do stuff to this  these  server s  using foreach     script ps1 host1 host2 host3  foreach   i in  args        Do-Stuff  i     I d like to add a named optional parameter called vlan  I ve tried   Param       string  vlan    foreach   i in  args        Write-Host  i   Write-Host  vlan   It works if you pass a -vlan parameter but if you don t then the script auto assigns the last server name to  vlan   So  how can you pass single or multiple parameters plus an optional named parameter to a PowerShell script   Ideally  here are valid examples     script ps1 host1   script ps1 host1 host2 host3   script ps1 host1 host2 -vlan office

User · Answer

I call a scheduled script who must connect to a list of Server this way:

Powershell.exe -File "YourScriptPath" "Par1,Par2,Par3"

Then inside the script:

param($list_of_servers)
...
Connect-Viserver $list_of_servers.split(",")

The split operator returns an array of string

User · Answer

One way to do it would be like this    param          Parameter Position 0   String  Vlan          Parameter ValueFromRemainingArguments  true   String    Hosts             This would allow multiple hosts to be entered with spaces

User · Answer

Parameters take input before arguments  What you should do instead is add a parameter that accepts an array  and make it the first position parameter  ex   param       Parameter Position   0        string    Hosts       string  VLAN        foreach   i in  Hosts           Do-Stuff  i     Then call it like     script ps1 host1  host2  host3 -VLAN 2   Notice the comma between the values  This collects them in an array

User · Answer

The easiest way is probably to use two parameters  One for hosts  can be an array   and one for vlan   param  String     Hosts   String   VLAN    Instead of  foreach   i in  args    you can use  foreach   hostName in  Hosts    If there is only one host  the foreach loop will iterate only once  To pass multiple hosts to the script  pass it as an array   myScript ps1 -Hosts host1 host2 host3 -VLAN 2      or something similar

[powershell] Passing multiple values to a single PowerShell script parameter

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