diff --git a/commands/linux.ipynb b/commands/linux.ipynb
index 3fa8a5c..abc7230 100644
--- a/commands/linux.ipynb
+++ b/commands/linux.ipynb
@@ -205,6 +205,30 @@
      "language": "python",
      "metadata": {},
      "outputs": []
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "## Compression"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "Uncompress all tar.gz in current directory to another directory"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for i in *.tar.gz; do echo working on $i; tar xvzf $i -C directory/ ; done"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
     }
    ],
    "metadata": {}