java_opts adjust xmx according to the machines memory

Bash/java_opts_adjust_xmx.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+JAVA_OPTS_XMX_MB=$(echo "Xmx: ${JAVA_OPTS}" | sed -e 's/.*\-Xmx\([0-9]\+\)m.*/\1/g' -e 's/.*\-Xmx\([0-9]\+\)g.*/\1*1024/g' | bc)
+MEMTOTAL_MB=$(awk '/MemTotal:/ { print $2/1024 }' /proc/meminfo | cut -d. -f1)
+echo "Setting jvm memory::: Memory Total: ${MEMTOTAL_MB}MB, Requested Xmx: ${JAVA_ARG_XMX_MB} "
+
+# setting minimal between requested xmx, leaving at least 15% or 1GB
+XMX_MB=$(echo " \
+    ${JAVA_OPTS_XMX_MB}
+    $(echo "$MEMTOTAL_MB - 1024" | bc)
+    $(echo "$MEMTOTAL_MB * 0.85" | bc)" \
+    | sort -n | head -1 | sed -e 's/\..*//g' -e 's/\ //g')
+
+echo "Memory Total: ${MEMTOTAL_MB}MB, Xms: ${XMX_MB}MB, Xmx: ${XMX_MB}MB"
+
+#replacing xms and xmx with the available xmx possible
+JAVA_OPTS=$(echo ${JAVA_OPTS} | sed -e 's/\"-Xm[xs][0-9]\+[mg]\"//g')
+JAVA_OPTS=`eval echo -Xmx${XMX_MB}m -Xms${XMX_MB}m ${JAVA_OPTS}`

Bash/read_server_ip.sh

@@ -2,7 +2,7 @@
 
 echo -n "Type the IP address of the server and press [ENTER]:"
 read ip_server
-while [ $(echo ${ip_server} | egrep -c "10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}") -lt 1 ]
+while [[ $(echo ${ip_server} | egrep -c "10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}") -lt 1 ]]
 do
 	read -p "Retype the PRIVATE IP address of the server and press [ENTER]:" ip_server
 done