Add errno to README

diff --git a/README b/README
index 6a100993aab1cd8ce3a5ba5be9f81b9063270486..c60df6c95587ab2183d3a3114f3d7de231433a79 100644 (file)
--- a/README
+++ b/README
@@ -3,6 +3,7 @@ long ago, when unix was young. Currently it consists of these tools:
 
 chronic: runs a command quietly unless it fails
 combine: combine the lines in two files using boolean operations
+errno: look up errno names and descriptions
 ifdata: get network interface info without parsing ifconfig output
 isutf8: check if a file or standard input is utf-8
 ifne: run a command if the standard input is not empty