adding an monitoring script as a tool to observe RACS performance and utilization of memory and RAMdisk

diff --git a/tools/racs_monitor.sh b/tools/racs_monitor.sh
new file mode 100644
index 0000000..44a8802
--- /dev/null
+++ b/tools/racs_monitor.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# auxiliary script to monitor RAMdisk and memory utilization
+#
+# This script is part of
+#	 RACS v1.0 (2018/2019) -- Open source tools for Analizing ChIP-Seq data
+#
+###########
+
+
+# RAMdisk location
+ramdisk="/dev/shm"
+RACSdir="ORF_RACS-"
+
+# set location to inspect
+location="${ramdisk}/${USER}/${RACSdir}*"
+
+# Commands
+# check for files generated in the specified location
+cmd1="ls -l $location "
+# check for memory utilization
+cmd2="free -g "
+# check for
+cmd3="du -s -h $location "
+# separator for separating commands
+separator="echo -----------"
+# message
+msg="echo Press 'CTRL-C' to exit the monitoring tool..."
+
+# combine commmands
+obs="$cmd1 ; $separator ; $cmd2 ; $separator ; $cmd3 ; $separator ; $msg"
+
+# for testing purposes
+obs="echo '*-*'$obs'-*-' ; $obs"
+
+# observe...
+watch $test