diff --git a/README.md b/README.md
index f171324..6e9bda8 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,16 @@
 
 Use [chroot with PHP](https://www.php.net/manual/fr/function.chroot.php) anbd isolate your website.
 
+## Configure
 To use it, edit chroot.sh and edit 3 variables :
 
 | Variable | Description |
 | -------- | ----------- |
 | CHROOTPATH | The path where this script store all files, bin, lib needed to chroot website (create this before) | 
 | ZONEINFO | The path where zoneinfo is stored. Find this with `find /usr -type d -name "zoneinfo"` |
-| libnss_dns | The path where libnss_dns lib is stored. Use `find /lib /usr/lib -name libnss_dns.so.2` to find lib. |
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+| libnss_dns | The path where libnss_dns lib is stored. Use `find /lib /usr/lib -name libnss_dns.so.2` to find lib. |
+
+## Use``
+`bash chroot.sh --install` copy all dependencies and store it on CHROOTPATH.
+`bash chroot.sh --upgrade` upgrade all dependencies in CHROOTPATH. 
+`bash chroot.sh --configure /my/website/path` add all dependencies in website folder mostly with hardlink.
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