How to match content between HTML specific tags with attribute using grep?

Question

Which regular expression should I use with the command grep if I wanted to match the text contained within the tag

and it

Answer 1

You can do that by specifying a regex:

grep -E "^
.*
$" input_files

Not that this will only print the enclosures found on the same line. If your tag spans multiple lines, you can try:

tr '\n' ' ' < input_file | grep -E "^
.*
$"