Add what-is.ps1

Scripts/what-is.ps1

@@ -0,0 +1,30 @@
+<#
+.SYNTAX       what-is.ps1 [<abbreviation>]
+.DESCRIPTION  prints a description of the given abbreviation
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+param($Abbreviation = "")
+if ($Abbreviation -eq "" ) { $Abbreviation = read-host "Enter the abbreviation" }
+
+try {
+	write-progress "Reading what-is.csv..."
+	$Table = import-csv "$PSScriptRoot/../Data/what-is.csv"
+
+	$FoundOne = 0
+	foreach($Row in $Table) {
+		if ($Row.Abbr -eq $Abbreviation) {
+			"$($Row.Context): $($Row.Description)"
+			$FoundOne = 1
+		}
+	}
+
+	if ($FoundOne -eq 0) {
+		"Sorry, no entry for $Abbreviation found"
+	}
+	exit 0
+} catch {
+	write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}