What I want is this:Having a file called file somewhere in the filesystem with a content something like:#!/bin/whatever-interpreter-you-wantecho 'line1'echo 'line2'When ANY (almost any since must exist a way to edit the script itself) program opens  file to read it gets:line1line2As its contents instead of:#!/bin/whatever-interpreter-you-wantecho 'line1'echo 'line2'Something like file contents being executed on the fly by the filesystem or the kernel itself (please, no cron, no inotify, no duct tape).
File contents created when opened
linux;files