Category "insertion"

Tool sed-like to insert a HTML snippet code (a div block) after a <div id="jsn-page">...</div>

I am looking for a way to insert a block <div id="jsn-content-bottom">...code...</div> after a block <div id="jsn-body">...</div>. I wan

Adding text and lines to the beginning of a file

I'd like to be able to add lines to the beginning of a file. This program I am writing will take information from a user, and prep it to write to a file. That