diff --git a/bin/ext b/bin/ext
new file mode 100755
index 0000000..16d3837
--- /dev/null
+++ b/bin/ext
@@ -0,0 +1,20 @@
+#!/bin/env sh
+
+if [ -f $1 ] ; then
+    case $1 in
+        *.tar.bz2)   tar xjf $1   ;;
+        *.tar.gz)    tar xzf $1   ;;
+        *.bz2)       bunzip2 $1   ;;
+        *.rar)       unrar x $1     ;;
+        *.gz)        gunzip $1    ;;
+        *.tar)       tar xf $1    ;;
+        *.tbz2)      tar xjf $1   ;;
+        *.tgz)       tar xzf $1   ;;
+        *.zip)       unzip $1     ;;
+        *.Z)         uncompress $1;;
+        *.7z)        7z x $1      ;;
+        *)           echo "'$1' cannot be extracted via ex()" ;;
+    esac
+else
+    echo "'$1' is not a valid file"
+fi