Shell Programming and Scripting

I have a file file123.xml which looks like this

xmlEntry="username"="josh" <property="never_back_down">
phone="<178652>"
apn=property:address="wonderland"
xmlEntry="username"="jessica" <property="never_back_down">
phone="<178653>"
apn=property:address="wonderland"
xmlEntry="username"="linda" <property="never_back_down">
phone="<178654>"
apn=property:address="wonderland"
xmlEntry="username"="jamie" <property="never_back_down">
phone="<178655>"
apn=property:address="wonderland"
phone="<178656>"
xmlEntry="username"="john" <property="never_back_down">
phone="<178657>"
apn=property:address="wonderland"
--------------------------------------------
Requirement is to whenever the following pattern is matched
xmlEntry="username"="<NAME>" <property="never_back_down">
the <NAME> will be replaced by <DUMMY_NAME>
e.g.
1.
xmlEntry="username"="jessica" <property="never_back_down">
will be replaced by
xmlEntry="username"="DUMMY_jessica" <property="never_back_down">
2.
xmlEntry="username"="john" <property="never_back_down">
will be replaced by
xmlEntry="username"="DUMMY_john" <property="never_back_down">

Thanks in advance.
Regards,
Poga

How about this

Code:

sed -e 's/"jessica"/"DUMMY_jessica"/' -e 's/"john"/"DUMMY_john"/' file123.xml

Code:

$ awk -F\" 'BEGIN{OFS="\""} {if($0~/username/) {$4="DUMMY_"$4;print $0}else{print $0}}' file123.xml > output.xml

use nawk if it is solaris

I am looking for the all the lines that has xmlEntry="username"="<NAME>" <property="never_back_down"> to be replaced by xmlEntry="username"="<DUMMY_NAME>" <property="never_back_down">, not only for the specific names.

Code:

$ sed 's/username"="/&DUMMY_/' test.txt

Thanks Itkamaraj , it worked. Thanks to you too Shawn for your help.