+--- rpm-5.4.10/scripts/rpm2cpio~ 2009-03-19 02:01:24.000000000 +0100
++++ rpm-5.4.10/scripts/rpm2cpio 2012-09-18 23:49:28.261438724 +0200
+@@ -25,13 +25,13 @@
+ EXTRACTOR="dd if=$pkg ibs=$o skip=1"
+
+ COMPRESSION=`($EXTRACTOR |file -) 2>/dev/null`
+-if echo $COMPRESSION |grep -q gzip; then
++if echo $COMPRESSION |grep -qi gzip; then
+ DECOMPRESSOR=gunzip
+-elif echo $COMPRESSION |grep -q bzip2; then
++elif echo $COMPRESSION |grep -qi bzip2; then
+ DECOMPRESSOR=bunzip2
+-elif echo $COMPRESSION |grep -q xz; then
++elif echo $COMPRESSION |grep -qi xz; then
+ DECOMPRESSOR=unxz
+-elif echo $COMPRESSION |grep -q cpio; then
++elif echo $COMPRESSION |grep -qi cpio; then
+ DECOMPRESSOR=cat
+ else
+ # Most versions of file don't support LZMA, therefore we assume