I have a text file that has at some point a text like this:

[....previous text...]

#[ID1]
#my_url="http://miccheck12.com"
#your_url="http://miccheck12.com"
#comments=""

[....subsequent text...]

The block of text I’m interested in is identified by ID1. For all the block I want to remove the prepending character #.

I was trying to do this with sed. Given that for example sed -i 's/#[ID1]/[ID1]/g' file.txt works successfully, I’ve tried to extend this to the next line like: sed -i 's/#[ID1]n#my_url/[ID1]/g' file.txt but it’s not catching the lines anymore. How can I solve this? I’m not even sure sed is the best approach.