Powershell Select-object from cert store
Don't use format-list, you already have all the properties. format-list will convert your nice X509Certificate2 object into a set of format objects which isn't what you want at all. Also use -expandproperty on the select:
PS>get-childitem | where { $_.subject -eq "CN=localhost" } | select -expandproperty SerialNumber6191F4A438FF77A24763E6D427749CD7Or with Powershell 3 or later, use the shorthand notation:
PS>$serno = (get-childitem | where { $_.subject -eq "CN=localhost" }).SerialNumberPS>$serno6191F4A438FF77A24763E6D427749CD7