diff --git a/freq_meter.sv b/freq_meter.sv
index a5c13cc..d73220a 100644
--- a/freq_meter.sv
+++ b/freq_meter.sv
@@ -43,7 +43,7 @@ module freq_meter (
.clk( clk ),
.nrst( nrst ),
.ena( 1'b1 ),
- .out( )
+ .out( clk_div )
);
// synchronizing into test frequency time domain
diff --git a/scripts/iperf_test.sh b/scripts/iperf_test.sh
new file mode 100644
index 0000000..7f10564
--- /dev/null
+++ b/scripts/iperf_test.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# iperf test.sh
+# published as part of https://github.com/pConst/basic_verilog
+# Konstantin Pavlov, pavlovconst@gmail.com
+
+# allows to test network performance on single local machine with two ports
+
+
+
+# create namespaces to force linux to pass data through the cable
+sudo ip netns add ns_server
+sudo ip netns add ns_client
+sudo ip link set enp1s0f0 netns ns_server
+sudo ip netns exec ns_server ip addr add dev enp1s0f0 192.168.2.1/24
+sudo ip netns exec ns_server ip link set dev enp1s0f0 up
+sudo ip link set enp1s0f1 netns ns_client
+sudo ip netns exec ns_client ip addr add dev enp1s0f1 192.168.2.2/24
+sudo ip netns exec ns_client ip link set dev enp1s0f1 up
+
+# start server (first terminal window)
+sudo ip netns exec ns_server iperf -s 192.168.2.1
+
+# start client (second termonal window)
+sudo ip netns exec ns_client iperf -c 192.168.2.1 -d -i1 -t60
+
+# remove namespaces
+sudo ip netns del ns_server
+sudo ip netns del ns_client
+
diff --git a/scripts/remove_dup_dirs.sh b/scripts/remove_dup_dirs.sh
new file mode 100644
index 0000000..b491633
--- /dev/null
+++ b/scripts/remove_dup_dirs.sh
@@ -0,0 +1,26 @@
+#! /bin/bash
+
+# ------------------------------------------------------------------------------
+# remove_dup_dirs.sh
+# published as part of https://github.com/pConst/basic_verilog
+# Konstantin Pavlov, pavlovconst@gmail.com
+# ------------------------------------------------------------------------------
+
+# Utility script to iterate through all subdirectories in the working directory
+# and try to find duplicate subdirectories in selected location.
+# Duplicate subdirs in selected location will be removed
+
+shopt -s nullglob
+
+for dir in */
+do
+ #echo "-- Inspecting $dir"
+
+ if [ -d "$1$dir" ]; then
+ #echo "= $1$dir"
+ rm -rfv $1$dir
+ else
+ echo "unique"
+ fi
+
+done
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