Простой способ отделения XML от всякого хлама

easyXMLsort.sh

#!/bin/bash

#IFS=$'\n'

INPUTDIR=./unsorted/
MYCOUNTER=0
MYMAXCOUNT=$(find "$INPUTDIR" -type f -iname "*.xml" | wc -l);
CURRENTDATE=$(date +"%Y%m%d-%H%M");

if [ ! -d 'xml' ]; then
  mkdir xml;
fi

if [ ! -d 'backup' ]; then
  mkdir backup;
fi

#UPPER CASE to lower case
find "$INPUTDIR" -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;


for i in $(find "$INPUTDIR" -type f -iname "*.xml"); do
	OLDPATH="$i";
	echo $i;	

	# Отображает анализируемый файл
	MYCOUNTER=$(($MYCOUNTER+1))
	echo "[ $MYCOUNTER из $MYMAXCOUNT ] $OLDPATH"

	if xmllint --noout --nowarning $OLDPATH; then 
		NEWNAME=`md5sum $OLDPATH | awk '{print $1}'`;
		mv -fv "$OLDPATH" xml/$NEWNAME.xml;
		if [ -f "$OLDPATH.sig" ]; then
  			mv -fv "$OLDPATH.sig" xml/$NEWNAME.xml.sig;
		fi
	else
		#mv -iv "$OLDPATH" notxml/$(basename $i);
    		echo "$OLDPATH not XML-file";
	fi
done

ls -1 ./xml > backup/$CURRENTDATE.log
tar -czf backup/$CURRENTDATE.tar.gz xml/