[SOLVED] How to grep particular lines

Issue

I am trying to fetch Some IDs from URL.

In my script I hit the URL using while loop and wget command and I save output in file.

Then in same loop I grep XYZ User ID: and 3 lines after this string and save it to another file.

When I open this output file I find following lines.

< p >XYZ User ID:< /p>

< /td >

< td>

< p>2989288174< /p>

So using grep or any thing else how can I print following output

XYZ User ID:2989288174

Solution

This should work (sed with extended regex):

sed -nr 's#<\s*p\s*>([^>]*)<\s*/\s*p\s*>#\1#p' file | tr -d '\n'

Output:

XYZ User ID:2989288174

Answered By - Jahid