diff --git a/RPM/SPECS/net-snmp-subagent-shell.spec b/RPM/SPECS/net-snmp-subagent-shell.spec
index 995fdd2..fd49fee 100644
--- a/RPM/SPECS/net-snmp-subagent-shell.spec
+++ b/RPM/SPECS/net-snmp-subagent-shell.spec
@@ -33,7 +33,7 @@ Net SNMP subagent executes arbitrary commands and provide results via snmpd
 
 %files
 %defattr(-,root,root)
-%_bindir/*
+%attr(755,root,root) %_bindir/*
 %dir /etc/snmp/subagent-shell
 %dir /etc/snmp/subagent-shell/mibs
 %dir /etc/snmp/subagent-shell/conf.d
@@ -61,6 +61,24 @@ if [ $1 = 0 ] ; then
 fi
 exit 0
 
+# this section is required to smooth upgrade from net-snmp-subagent package
+%triggerpostun -- net-snmp-subagent
+if [ "$1" == "1" ]; then
+  if [ -d /etc/snmp/subagent ]; then
+    for f in `find /etc/snmp/subagent/ -maxdepth 1 -type f -name '*.rpmsave'`
+    do
+      mv $f /etc/snmp/subagent-shell/`basename $f`
+    done
+    pushd /etc/snmp/subagent >/dev/null 2>&1 
+    find -maxdepth 1 -type f -exec cp '{}' /etc/snmp/subagent-shell ';'
+    popd >/dev/null 2>&1
+    rm -rf /etc/snmp/subagent
+    echo 'Files from /etc/snmp/subagent moved to new /etc/snmp/subagent-shell directory ...'
+  fi
+  /sbin/chkconfig --add subagent-shell || :
+  /sbin/service subagent-shell start >/dev/null 2>&1 || :
+fi
+
 %changelog
 * Wed Nov 23 2011 Serge <abrikus@gmail.com> 1.1.0.0-ssv1
 -- Initial release
diff --git a/configure.ac b/configure.ac
index d9f7779..81c39e6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,5 @@
-AC_INIT(net-snmp-subagent-shell, 2.1.2.0, abrikus@gmail.com)
-AM_INIT_AUTOMAKE(net-snmp-subagent-shell, 2.1.2.0)
+AC_INIT(net-snmp-subagent-shell, 2.1.2.1, abrikus@gmail.com)
+AM_INIT_AUTOMAKE
 AC_PROG_INSTALL
 AC_OUTPUT(Makefile)
+AC_OUTPUT(subagent-shell)
diff --git a/subagent-shell.in b/subagent-shell.in
old mode 100755
new mode 100644
index d55df43..862f316
--- a/subagent-shell.in
+++ b/subagent-shell.in
@@ -75,6 +75,8 @@ undef $opt->{log_file} unless $opt->{log_file};
 
 sub help {
   print <<EOHELP;
+Version: @VERSION@
+
 Usage: subagent-shell [options]
 
 Options: