saving uncommitted changes in /etc prior to emerge run

hprofile/example-profiles/boot/ptest

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# This script should echo only the name of the profile that should be used
+# It should assume it is called before any other scripts. In particular, it
+# cannot rely on environment variables set in /etc/profile or elsewhere. The
+# script may assume it will be run as root.
+
+# To determine the boot profile, first check whether a profile has been
+# explicitly set on the kernel command line. If not, use VMWare's checkvm
+# tool to find out whether we are in VMWare or Dualboot mode.
+
+cmdline_option="hprofile"
+cmdline="/proc/cmdline"
+
+profile=""
+
+# Check kernel command line (lilo append line) for an "hprofile=" option
+if grep -i "${cmdline_option}=" "${cmdline}" >/dev/null 2>&1 ; then
+  profile=$(cat "${cmdline}" | 
+							sed "s/^.*${cmdline_option}=\([^[:space:]]*\).*$/\1/")
+else
+	if test -x /usr/sbin/vmware-checkvm ; then
+		if /usr/sbin/vmware-checkvm >/dev/null 2>&1 ; then
+			profile="vmware"
+		else
+			profile="dualboot"
+		fi
+	fi
+fi
+
+echo ${profile}