how to append additional lines in an another file

[bluemind2005]

Here the question.
orion-web.xml is a file which has mode nodes of which
<webapp>
</webapp>
is one of the it.

How can we add
<session-config>
<session-timeout>-1s</session-timeout>
<session-config>

Here is the resolution which is not working,
echo "<session-config>\n" > /tmp/somefile
echo "<session-timeout>-1s</session-timeout>\n" >> /tmp/somefile
echo "<session-config>\n" >> /tmp/somefile

sed -i "<webapp>/r /tmp/somefile" orion-web.xml

[ford]

">" will dump to file, overwriting anything there
">>" will append to file, but at the very end

so, you could do:
cat >> ~/your_file << "EOF"
<session-config>
<session-timeout>-1s</session-timeout>
<session-config>
EOF

[bluemind2005]

Sorry can you please illustrate with actual commands what you mean to say?

Thanks

[atreyu]

Sorry can you please illustrate with actual commands what you mean to say?

Thanks

He did. The command he used is cat. His example uses cat to append everything inside the two EOF statements to the end of the file named ~/yourfile.

One issue: your session-config parameter needs to have a closing "/" at the beginning of the parameter name, in order to "close" the node.

I'm not entirely clear what you want your XML to look like, is it something like this?

<webapp>
  <session-config>
    <session-timeout>-1s</session-timeout>
  </session-config>
</webapp>