home: Move mosh cleanup script to local bin

home/local/bin/kill-old-mosh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+mysession=$(cat /proc/self/sessionid)
+count=0
+while read pid _; do
+	session=$(cat /proc/$pid/sessionid)
+	if [ "$mysession" != "$session" ]; then 
+		if kill $pid; then
+			echo 2>&1 "stale mosh session $pid killed"
+	                count=$((count + 1))
+		fi
+	fi
+done <<<$(ps -C mosh-server -o pid=,etimes= | sort -k 2 -r)
+
+if [[ $count -eq 0 ]]; then
+	echo 2>&1 "No stale mosh session found"
+fi