UNIX for Dummies Questions & Answers

<?xml version="1.0" encoding="utf-8" ?> 
<R1Msg TimeStamp="2010-10-19T08:49:08.000000Z>
<TestRec>
<ID>1000</ID> 
</TestRec>
</R1Msg>

for i in *.xml; do echo $i;awk -F"[<>]" 'NR==2{print $2}' $i; done

TestMsg2010-10-19_20_20_54.xml
R1Msg TimeStamp="2010-10-19T08:49:08.000000Z"
TestMsg2010-10-19_20_20_58.xml
R2Msg TimeStamp="2010-10-19T08:49:08.000000Z"
Renamed File Output what I want to achieve
R1Msg2010-10-19_20_20_54.xml
R2Msg2010-10-19_20_20_58.xml
R3Msg2010-10-19_20_21_00.xml

for i in *.xml
do 
  awk -F"[ <]" 'BEGIN{f=FILENAME; sub(".*Msg","",f)}
  /TimeStamp=/ {f=$2 f; print "mv " FILENAME " " f; exit}' "$i" | sh
done

$ ls *.xml
TestMsg2010-10-19_20_20_54.xml
$ cat script
for i in *.xml
do 
  awk -F"[ <]" 'BEGIN{f=FILENAME; sub(".*Msg","",f)}
  /TimeStamp=/ {f=$2 f; print "mv " FILENAME " " f; exit}' "$i"
done
$ ./script
mv TestMsg2010-10-19_20_20_54.xml R1Msg2010-10-19_20_20_54.xml
$

for i in *.xml
do 
  awk  -F="[ <]" '{f=FILENAME; sub(".*Msg","",f)}
  /TimeStamp=/ {f=$2 f; print "mv " FILENAME " " f; exit}' "$i"
done