diff --git a/README.md b/README.md
index 51da479..f6bf7f5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # dash
 
+DASH is a POSIX-compliant implementation of /bin/sh that aims to be as small as possible.
+It does this without sacrificing speed where possible.
+In fact, it is significantly faster than bash (the GNU Bourne-Again SHell) for most tasks.
+
diff --git a/dash.spec b/dash.spec
new file mode 100644
index 0000000..0738296
--- /dev/null
+++ b/dash.spec
@@ -0,0 +1,87 @@
+Name:          dash
+Version:       0.5.7
+Release:       4mamba
+Summary:       A lightweight POSIX-compliant implementation of /bin/sh
+Group:         Applications/Shells
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Davide Madrisan <davide.madrisan@gmail.com>
+URL:           http://gondor.apana.org.au/~herbert/dash/
+Source:        http://gondor.apana.org.au/~herbert/dash/files/dash-%{version}.tar.gz
+License:       BSD
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+## AUTOBUILDREQ-END
+Provides:      /bin/sh
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+DASH is a POSIX-compliant implementation of /bin/sh that aims to be as small as possible.
+It does this without sacrificing speed where possible.
+In fact, it is significantly faster than bash (the GNU Bourne-Again SHell) for most tasks. 
+
+%prep
+%setup -q
+
+%build
+%configure --bindir=/bin
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall
+
+ln -s dash.1 %{buildroot}%{_mandir}/man1/sh.1
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -p /bin/dash
+if [ $1 -ge 1 ]; then
+   sh=`readlink /bin/sh`
+   [ "$sh" != "/etc/alternatives/sh" -o ! -L /bin/sh ] && ln -sf dash /bin/sh
+   /usr/sbin/update-alternatives \
+      --install /bin/sh sh /bin/dash 10
+fi
+exit 0
+
+%postun
+if [ $1 -eq 0 ]; then
+   # remove legacy alternatives /usr/bin/ld
+   /usr/sbin/update-alternatives --remove sh /bin/dash 2>/dev/null
+fi
+exit 0
+
+%posttrans -p /bin/dash
+[ -e /bin/sh ] || ln -s /etc/alternatives/sh /bin/sh
+exit 0
+
+%files
+%defattr(-,root,root)
+/bin/dash
+%{_mandir}/man1/dash.*
+%{_mandir}/man1/sh.*
+%doc COPYING
+#ChangeLog
+
+%changelog
+* Tue Oct 15 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.5.7-4mamba
+- run scripts with /bin/dash to avoid damage due to /bin/sh disappearing
+
+* Tue Oct 15 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.5.7-3mamba
+- configure /bin/sh as an alternative
+
+* Mon Sep 30 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.5.7-2mamba
+- provide /bin/sh symlink replacing bash as default sh interpreter
+
+* Sat Jul 23 2011 Automatic Build System <autodist@mambasoft.it> 0.5.7-1mamba
+- automatic update to 3.0.3.0 by autodist
+
+* Wed Feb 02 2011 Automatic Build System <autodist@mambasoft.it> 0.5.6.1-1mamba
+- automatic update by autodist
+
+* Fri Jan 21 2011 Davide Madrisan <davide.madrisan@gmail.com> 0.5.6-1mamba
+- update to 0.5.6
+
+* Mon Nov 17 2008 Aleph0 <aleph0@openmamba.org> 0.5.4-1mamba
+- package created by autospec