diff --git a/Bash/temposPrecis.sh b/Bash/temposPrecis.sh
new file mode 100644
index 0000000..69035ea
--- /dev/null
+++ b/Bash/temposPrecis.sh
@@ -0,0 +1,15 @@
+#/!bin/bash
+
+let "interval=30"
+start=$(date +"%s")
+
+# do something
+
+end=$(date +"%s")
+let "timeTaken=end-start"
+let "timeToSleep=interval-timeTaken"
+if [ $timeToSleep -gt 0 ]
+then
+	echo "sleep for $timeToSleep sec"
+	sleep $timeToSleep
+fi