diff -Naur grub-1.99/util/grub.d/10_kfreebsd.in grub-1.99-alx/util/grub.d/10_kfreebsd.in
--- grub-1.99/util/grub.d/10_kfreebsd.in	2011-03-29 02:56:38.000000000 +0200
+++ grub-1.99-alx/util/grub.d/10_kfreebsd.in	2011-07-01 22:57:43.000000000 +0200
@@ -188,5 +188,5 @@
     kfreebsd_entry "${OS}" "${version}" true "-s"
   fi
 
-  list=`echo $list | tr ' ' '\n' | grep -vx $kfreebsd | tr '\n' ' '`
+  list=`echo $list | tr ' ' '\n' | grepvx $kfreebsd | tr '\n' ' '`
 done
diff -Naur grub-1.99/util/grub.d/10_linux.in grub-1.99-alx/util/grub.d/10_linux.in
--- grub-1.99/util/grub.d/10_linux.in	2011-05-14 22:36:49.000000000 +0200
+++ grub-1.99-alx/util/grub.d/10_linux.in	2011-07-01 22:57:35.000000000 +0200
@@ -81,8 +81,8 @@
       cat << EOF
 	load_video
 EOF
-      if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
-	  && grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
+      if grepqx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
+	  && grepqx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
 	  cat << EOF
 	set gfxpayload=keep
 EOF
@@ -195,5 +195,5 @@
 	"single ${GRUB_CMDLINE_LINUX}"
   fi
 
-  list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
+  list=`echo $list | tr ' ' '\n' | grepvx $linux | tr '\n' ' '`
 done
diff -Naur grub-1.99/util/grub.d/20_linux_xen.in grub-1.99-alx/util/grub.d/20_linux_xen.in
--- grub-1.99/util/grub.d/20_linux_xen.in	2011-04-13 21:20:29.000000000 +0200
+++ grub-1.99-alx/util/grub.d/20_linux_xen.in	2011-07-01 22:57:25.000000000 +0200
@@ -113,7 +113,7 @@
 		break
 	    fi
 	done
-        if (grep -qx "CONFIG_XEN_DOM0=y" "${config}" 2> /dev/null || grep -qx "CONFIG_XEN_PRIVILEGED_GUEST=y" "${config}" 2> /dev/null); then echo -n "$i " ; fi
+        if (grepqx "CONFIG_XEN_DOM0=y" "${config}" 2> /dev/null || grepqx "CONFIG_XEN_PRIVILEGED_GUEST=y" "${config}" 2> /dev/null); then echo -n "$i " ; fi
     fi
     done`
 if [ "x${linux_list}" = "x" ] ; then
@@ -167,8 +167,8 @@
 		"single ${GRUB_CMDLINE_LINUX}" "${GRUB_CMDLINE_XEN}"
 	fi
 
-	list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '`
+	list=`echo $list | tr ' ' '\n' | grepvx $linux | tr '\n' ' '`
     done
     echo "}"
-    xen_list=`echo $xen_list | tr ' ' '\n' | grep -vx $current_xen | tr '\n' ' '`
+    xen_list=`echo $xen_list | tr ' ' '\n' | grepvx $current_xen | tr '\n' ' '`
 done
diff -Naur grub-1.99/util/grub-install.in grub-1.99-alx/util/grub-install.in
--- grub-1.99/util/grub-install.in	2011-04-03 15:36:21.000000000 +0200
+++ grub-1.99-alx/util/grub-install.in	2011-07-01 22:37:55.000000000 +0200
@@ -59,6 +59,22 @@
 removable=no
 efi_quiet=
 
+grepqx()
+{
+	local line="$1"
+	local file="$2"
+	local ret
+
+	ret=$(sed -n "/^${line}$/p" ${file})
+	if [[ -z ${ret} ]]
+	then
+		return 1
+	else
+		return 0
+	fi
+}
+
+
 # Get GRUB_DISTRIBUTOR.
 if test -f "${sysconfdir}/default/grub" ; then
     . "${sysconfdir}/default/grub"
@@ -510,7 +526,7 @@
 
 if [ "x${devabstraction_module}" = "x" ] ; then
     if [ x"${install_device}" != x ]; then
-      if echo "${install_device}" | grep -qx "(.*)" ; then
+      if echo "${install_device}" | grepqx "(.*)" ; then
         install_drive="${install_device}"
       else
         install_drive="`"$grub_probe" --device-map="${device_map}" --target=drive --device "${install_device}"`" || exit 1
diff -Naur grub-1.99/util/grub-mkconfig_lib.in grub-1.99-alx/util/grub-mkconfig_lib.in
--- grub-1.99/util/grub-mkconfig_lib.in	2011-04-10 15:29:35.000000000 +0200
+++ grub-1.99-alx/util/grub-mkconfig_lib.in	2011-07-02 16:03:20.000000000 +0200
@@ -163,7 +163,7 @@
     a="$b"
     b="$c"
   fi
-  if (echo "$a" ; echo "$b") | sort -n | head -n 1 | grep -qx "$b" ; then
+  if (echo "$a" ; echo "$b") | sort -n | head -n 1 | grepqx "$b" ; then
     return 0
   else
     return 1
@@ -225,3 +225,36 @@
   done
   return 1
 }
+grepqx()
+{
+	local line="$1"
+	local file="$2"
+	local ret
+
+	ret=$(sed -n "/^${line}$/p" ${file})
+	if [[ -z ${ret} ]]
+	then
+		return 1
+	else
+		return 0
+	fi
+}
+
+grepvx()
+{
+	local line="$1"
+	local file="$2"
+	local ret
+
+	# fix /
+	line="$(echo ${line} | sed 's:/:\\/:g')"
+
+	ret=$(sed "/^${line}$/d" ${file})
+	if [[ -z ${ret} ]]
+	then
+		return 1
+	else
+		echo "${ret}"
+		return 0
+	fi
+}