1 files changed, 41 insertions, 0 deletions
diff --git a/doc/graph_info.md b/doc/graph_info.md
new file mode 100644
index 0000000..d353a81
--- /dev/null
+++ b/doc/graph_info.md
@@ -0,0 +1,41 @@
+graph_info(1) -- Print basic information about a graph
+======
+
+## SYNOPSIS
+
+`graph_info` <graph_in> 
+
+## DESCRIPTION
+
+`graph_info` prints the number of nodes, number of edges, average
+degree, and average squared degree of  <graph_in>. 
+
+
+## PARAMETERS
+
+* <graph_in>:
+    undirected input graph (edge list). If is equal to `-` (dash), read
+    the edge list from STDIN.
+
+## OUTPUT
+
+The program prints on STDOUT a single line in the format:
+
+        N K avg_k avg_k2
+
+where `N` is the number of nodes, `K` is the number of edges, `avg_k`
+is the average degree, and `avg_k2` is the average squared degree of <graph_in>.
+
+## SEE ALSO
+
+clust(1)
+
+## REFERENCES
+
+* V\. Latora, V. Nicosia, G. Russo, "Complex Networks: Principles,
+  Methods and Applications", Cambridge University Press (2017)
+
+
+## AUTHORS
+
+(c) Vincenzo 'KatolaZ' Nicosia 2009-2017 `<v.nicosia@qmul.ac.uk>`.