How do test if the number of characters in $dbUserName is more than eight characters?
I have been unable to locate a command or series of commands that will let me do this. I have only been able to find if the variable is null:
if ($dbUserName) {
Write-Output " You left Username blank"
$dbUserName = read-host
}
But I would like to next test like this:
if ($dbUserName [String] > 8 ) }
Write-Output " Please enter more than 8 characters "
$dbUserName=read-host " Re-enter database user name"
}
This question is related to
variables
testing
powershell
Use the length property of the [String] type:
if ($dbUserName.length -gt 8) {
Write-Output "Please enter more than 8 characters."
$dbUserName = Read-Host "Re-enter database username"
}
Please note that you have to use -gt instead of > in your if condition. PowerShell uses the following comparison operators to compare values and test conditions:
You can also use -match against a Regular expression. Ex:
if ($dbUserName -match ".{8}" )
{
Write-Output " Please enter more than 8 characters "
$dbUserName=read-host " Re-enter database user name"
}
Also if you're like me and like your curly braces to be in the same horizontal position for your code blocks, you can put that on a new line, since it's expecting a code block it will look on next line. In some commands where the first curly brace has to be in-line with your command, you can use a grave accent marker (`) to tell powershell to treat the next line as a continuation.
Source: Stackoverflow.com