Add some info on Powershell scripting

arch-config/Dokumente/programming/powershell-scripting.md

@@ -0,0 +1,14 @@
+# Powershell scripting
+
+Use PowerShell ISE to develop PowerShell scripts  
+
+## Comparison operators
+
+| operator | description          |
+| -------- | -----------          |
+| -eq      | equals               |
+| -ne      | not equals           |
+| -gt      | greather than        |
+| -ge      | greater or equals to |
+| -lt      | less than            |
+| -le      | less or equals to    |