added checkalive script that can be called frequently to restart crashed

peers automatically

bin/checkalive.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# add in /etc/crontab
+# 0 *	* * *	yacy    cd /home/yacy/production/bin && ./checkalive.sh
+
+RESULT=`wget --spider http://localhost:8090/Status.html 2>&1`
+FLAG=0
+
+for x in $RESULT; do
+    if [ "$x" = '200' ]; then
+        FLAG=1
+    fi
+done
+
+if [ $FLAG -eq '0' ]; then
+    cd ..
+    timeout 30s ./stopYACY.sh
+    ./killYACY.sh
+    rm DATA/yacy.running
+    ./startYACY.sh
+fi
+
+exit