diff --git a/.bashrc b/.bashrc
index 4dc3448..ebf3f03 100644
--- a/.bashrc
+++ b/.bashrc
@@ -13,4 +13,19 @@ HISTSIZE= HISTFILESIZE=
 # Auto cd
 shopt -s autocd
 
+# check the window size after each command and, if necessary,
+# update the values of LINES and COLUMNS.
+shopt -s checkwinsize
+
 source $HOME/.bash_aliases
+
+# enable programmable completion features (you don't need to enable
+# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
+# sources /etc/bash.bashrc).
+if ! shopt -oq posix; then
+  if [ -f /usr/share/bash-completion/bash_completion ]; then
+    . /usr/share/bash-completion/bash_completion
+  elif [ -f /etc/bash_completion ]; then
+    . /etc/bash_completion
+  fi
+fi