From 9c191bb994e0d3d202d67b949a9775aacc77b554 Mon Sep 17 00:00:00 2001
From: ceetav <ceetav@gmail.com>
Date: Wed, 20 Jan 2016 01:29:26 +0300
Subject: [PATCH] simplify distro detection for RHEL-derivatives

---
 scripts/centos/cleanup.sh | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/scripts/centos/cleanup.sh b/scripts/centos/cleanup.sh
index 1ffcc9334..4399e21ee 100644
--- a/scripts/centos/cleanup.sh
+++ b/scripts/centos/cleanup.sh
@@ -1,19 +1,12 @@
 #!/bin/sh -eux
 
-if [ -s /etc/oracle-release ]; then
-  distro='oracle'
-elif [ -s /etc/enterprise-release ]; then
-  distro='oracle'
-elif [ -s /etc/redhat-release ]; then
-  # should ouput 'centos' OR 'red hat'
-  distro=`cat /etc/redhat-release | sed 's/^\(CentOS\|Red Hat\).*/\1/i' | tr '[:upper:]' '[:lower:]'`
-fi
-
+# should output one of 'redhat' 'centos' 'oraclelinux'
+distro="`rpm -qf --queryformat '%{NAME}' /etc/redhat-release | cut -f 1 -d '-'`" 
 
 # Remove development and kernel source packages
 yum -y remove gcc cpp kernel-devel kernel-headers perl;
 
-if [ "$distro" != 'red hat' ]; then
+if [ "$distro" != 'redhat' ]; then
   yum -y clean all;
 fi