diff --git a/ardumont/graph_bar.py b/ardumont/graph_bar.py
new file mode 100755
index 0000000..71dd9be
--- /dev/null
+++ b/ardumont/graph_bar.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+# dependency: python3-click python3-matplotlib
+
+# file to pass is of the form, for one line: <sha1>\t<length>
+
+import click
+import os
+
+from matplotlib import pyplot as plt
+from matplotlib import style
+
+
+def read_length_from_file(path):
+    with open(path, 'r') as f:
+        for line in f.readlines():
+            _, length = line.strip().split('\t')
+            yield int(length)
+
+
+@click.command()
+@click.option('--path', required=1,
+              help='Path to file holding information to draw')
+@click.option('--log/--nolog', default=False,
+              help='Graph with logarithmic function')
+def main(path, log):
+    style.use('ggplot')
+
+    if not os.path.exists(path):
+        raise ValueError('Path %s must exist!' % path)
+
+    xs = list(read_length_from_file(path))
+
+    if log:
+        plt.hist(xs, bins=100, log=True)
+    else:
+        plt.hist(xs, bins=100)
+
+    plt.title('Length distribution')
+    plt.ylabel('Number of occurrences')
+    plt.xlabel('Length')
+
+    plt.show()
+
+
+if __name__ == '__main__':
+    main()