created shell dir

shell/time_measurement.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+#start time measurement from here
+START=$(date +%s)
+CURRENT_DIRECTORY=$(pwd)
+sleep 2 #sleep 2 seconds
+END=$(date +%s)
+
+#end time measurement
+DIFFERENCE=$(( END - START ))
+
+echo
+echo Time elapsed: $DIFFERENCE seconds.