UNIX for Dummies Questions & Answers

i wanted to add a child element child2 into a below xml .
<parent1>
<child1></child1>
</parent1>

like

<parent1>
<child1></child1>
<child2></child2>
</parent1>


What is the best way to do this using unix commands.

I donot want to create a temp file....

cat original | "add element" > tempfile
cat tempFile > original

Is there any other better way to do this. Also i will be needing a functionality to delete any child element based on element id (element id not shown here).

Regards

i wanted to pass '<child2></child2>' as a parameter to the shell script

sedspt
#################
/<child1><\/child1>/a\
<child2></child2>
#################

sed -f sedspt file

for deletion
sed "/pattern/d" file

Code:

append_str=$1
sed -e "/<child1><\/child1>/a\\
$append_str" f