diff --git a/case-lib/lib.sh b/case-lib/lib.sh
index 412864da..8c5a18bb 100644
--- a/case-lib/lib.sh
+++ b/case-lib/lib.sh
@@ -85,3 +85,21 @@ func_lib_restore_pulseaudio()
     unset PULSECMD_LST
     declare -ag PULSECMD_LST
 }
+
+func_lib_get_random()
+{
+    # RANDOM: Each time this parameter is referenced, a random integer between 0 and 32767 is generated
+    local random_max random_min random_scope
+    if [ $# -ge 2 ];then
+        random_max=$2
+        random_min=$1
+        random_scope=$(expr $random_max - $random_min)
+        expr $RANDOM % $random_scope + $random_min
+    elif [ $# -eq 1 ];then
+        random_max=$1
+        expr $RANDOM % $random_max
+    else
+        echo $RANDOM
+    fi
+}
+