diff --git a/default.inc b/default.inc
index dab286e..83823fa 100755
--- a/default.inc
+++ b/default.inc
@@ -46,47 +46,6 @@ else
 	#exit 1
 fi
 
-
-# Script outputs results in the format that can either be parsed or
-# directly eval'ed in Bourne shell:
-#
-# Example
-# -----------
-# sherlock
-# OS=Linux
-# MACH=x86_64
-# KERNEL=2.6.32-5-amd64
-# DISTRIBUTION=debian
-# FAMILY=debian
-# DERIVATIVE=Debian
-# RELEASE=6.0.6
-# CODENAME=squeeze
-#
-
-detect_os () {
-
-    OS=`uname -s`
-    MACH=`uname -m`
-
-    echo OS=$OS
-    echo MACH=$MACH
-
-    if [ "${OS}" = "SunOS" ] ; then
-	    echo ARCH=`uname -p`	
-	    OSSTR="${OS} ${REV}(${ARCH} `uname -v`)"
-        echo FAMILY=solaris
-    elif [ "${OS}" = "AIX" ] ; then
-	    echo OSSTR="${OS} `oslevel` (`oslevel -r`)"
-        echo FAMILY=aix
-    elif [ "${OS}" = "Darwin" ] ; then
-        echo REV=`uname -r`
-        echo FAMILY=macosx
-    elif [ "${OS}" = "Linux" ] ; then
-	    echo KERNEL="`uname -r`"
-        linux_distro
-    fi
-}
-
 redhat_derivative () {
 
     local FILE=/etc/redhat-release
@@ -100,31 +59,20 @@ redhat_derivative () {
     echo DERIVATIVE=unknown
 }
 
-redhat_release () {
-    echo RELEASE=`tr -d 'a-zA-Z [](){}' < /etc/redhat-release`
-}
-
-debian_derivative () {
-    if which lsb_release 2>&1 > /dev/null ; then
-        echo DERIVATIVE=`lsb_release --id --short 2> /dev/null`
-        echo RELEASE=`lsb_release --release --short 2> /dev/null`
-        echo CODENAME=`lsb_release --codename --short 2> /dev/null`
-        return
-    else
-        echo DERIVATIVE=unknown
-        echo RELEASE=`cat /etc/debian_version`
-        echo CODENAME=unknown
-        return
-    fi
-}
-
-linux_distro () {
-
+detect_os () {
+	local -n myresult="$1" || return 1
+	echo MACH=$MACH
 	if [ -f /etc/redhat-release ] ; then
 		echo DISTRIBUTION=redhat
         echo FAMILY=rh
-        redhat_derivative
-        redhat_release
+	    local FILE=/etc/redhat-release
+	    grep -i 'red.*hat.*enterprise.*linux' $FILE 2>&1 > /dev/null && { echo  DERIVATIVE=rhel; return; }
+	    grep -i 'red.*hat.*linux' $FILE 2>&1 > /dev/null && { echo DERIVATIVE=rh; return; }
+	    grep -i 'cern.*e.*linux' $FILE 2>&1 > /dev/null && { echo DERIVATIVE=cel; return; }
+	    grep -i 'scientific linux cern' $FILE 2>&1 > /dev/null && { echo DERIVATIVE=slc; return; }
+	    grep -i 'centos' $FILE 2>&1 > /dev/null && { echo DERIVATIVE=centos; return; }
+		#echo DERIVATIVE=unknown
+        echo RELEASE=`tr -d 'a-zA-Z [](){}' < /etc/redhat-release`
     elif [ -s /etc/slackware-version ]; then
         echo DISTRIBUTION="slackware"
 	elif [ -f /etc/SUSE-release ] ; then
@@ -142,7 +90,15 @@ linux_distro () {
 	elif [ -f /etc/debian_version ] ; then
         echo DISTRIBUTION=debian
         echo FAMILY=debian
-        debian_derivative
+	    if which lsb_release 2>&1 > /dev/null ; then
+	        echo DERIVATIVE=`lsb_release --id --short 2> /dev/null`
+	        echo RELEASE=`lsb_release --release --short 2> /dev/null`
+	        echo CODENAME=`lsb_release --codename --short 2> /dev/null`
+	    else
+	        echo DERIVATIVE=unknown
+	        echo RELEASE=`cat /etc/debian_version`
+	        echo CODENAME=unknown
+	    fi
     elif [ -f /etc/UnitedLinux-release ]; then
         echo DISTRIBUTION="united"
         echo VERSION=`cat /etc/UnitedLinux-release`
diff --git a/test.sh b/test.sh
index 268ca47..0d86543 100755
--- a/test.sh
+++ b/test.sh
@@ -18,22 +18,4 @@ fi
 
 
 
-function myfunc()
-{
-    local -n myresult="$1" || return 1
-	myresult[0]="a"
-	myresult[1]="b"
-	myresult[2]="c"
-	myresult[3]="d"
-	myresult[4]="e"
-}
-generatearray() {
-    # $1 is array name in which array is generated
-    local -n array="$1" || return 1
-    array=( foo doo coo )
-}
-# call function that constructs the array with the array name
-myfunc targetvalue
-# display it
-declare -p myresult
-
+detect_os
\ No newline at end of file