diff --git a/.bashrc b/.bashrc
index 50be9de..54bc5b9 100644
--- a/.bashrc
+++ b/.bashrc
@@ -29,3 +29,7 @@ set -o ignoreeof
 # Append, rather than overwrite history files
 # Useful for when multiple bash sessions are running
 shopt -s histappend
+
+# check the window size after each command and, if necessary,
+# update the values of LINES and COLUMNS.
+shopt -s checkwinsize