使用Ubuntu机器上的Powershell获取SSL证书的到期日期

Question

I'm trying to execute the following script on ubuntu machine using PS mode but it shows me nothing, I want to know how can I do have this date. Below is the script that I have wrote:

$var = (Get-ChildItem /etc/ssl/certs)[0].NotAfter
Write-Host $var

Answer 1

PowerShell doesn't magically parse certificate files for you. Use the openssl command.

$cert = (Get-ChildItem /etc/ssl/certs)[0].FullName
$var = ((& openssl x509 -in $cert -dates -noout) -match 'notAfter').Split('=')[1]