Request Computer Name before running script - powershell

Question

I have a script that stops a service then renames a folder on the local computer, i would like to be able to make a run remotely by asking the command executer to enter the machine name of where it would like to run the script then execute.
try {
Stop-service wuauserv -force
} catch {
Write-error "Unable to stop the service WUAUSERV"
start-sleep -seconds 5
exit
}
try {
Rename-Item "C:\Windows\SoftwareDistribution" "C:\Windows\SoftwareDistribution.old" -force
} catch {
Write-error "Unable to rename the folder :("
start-service wuauserv
start-sleep -seconds 5
exit
}
start-service wuauserv

Answer 1

I would probably have the script take a parameter by adding this at the top
Param(
[Parameter(Mandatory)][string]$ComputerName
)
The Mandatory value will prompt the user to enter a value if it was not supplied.
Alternatively if you really want to manually ask the user you can use this:
$ComputerName = Read-Host "ComputerName"
This will also prompt the user to enter a variable.
Then use Invoke-Command to run your logic on the remote computer
Invoke-Command -ComputerName $ComputerName -ScriptBlock {
# Your code here..
}
Edit:
After your update, I notice you terminate the script by calling exit. I would advise you to use return instead. If someone runs this script from the commandline the script will kill the terminal, which is quite annoying.
Edit2: Here is a complete working example, with my recommendations:
Param(
[Parameter(Mandatory)][string]$ComputerName
)
Invoke-Command -ComputerName $ComputerName -ScriptBlock {
try {
Stop-Service wuauserv -Force
} catch {
Write-error "Unable to stop the service WUAUSERV"
Start-Sleep -Seconds 5
return
}
try {
Rename-Item "C:\Windows\SoftwareDistribution" "C:\Windows\SoftwareDistribution.old" -Force
} catch {
Write-error "Unable to rename the folder :("
Start-Service wuauserv
Start-Sleep -Seconds 5
return
}
Start-Service wuauserv
}