I have a home made log file that contains sets of filenames of text files and associated notes,
for example:
note 1
note 2
note 3
/dir/subdir/filenam1
note
another note
/dir/anotherdir/sub/somefile
....

I need to process this file in the following manner:
1) copy a contiguous selected part of it to a new file
(can be done manually with copy and paste up to here)
2) select from this new file the associated notes and filename sets one after the other
3) leave as or change or remove or add to notes and/or to file of "filename" selected in 2)
4) record type of changes made in 3) + filename into a new log file
5) save new files modified in 3)
6) append file created in 4) at the end of my home made log file

I use the emacs editor.
my main objectives are to:
1) avoid typing at the keyboard as much as possible to avoid mistakes
2) use bash script + HTML and javascript, if possible, to make it easier for the user if 'clicking'
options (in 3)) can be implemented.

Can anyone suggest how to approach this?

So as i understand you want to use a browser as your interface ?

Do you know any perl ?

No, I don't know Perl and I would prefer not to learn it. I've got some basic experience with "bash" and "javascript" and what really has to be coded, I do in
assembly language.

If you don't mind writing a server side script to achieve this (you can use a database to store the log) you can learn MySQL and PHP. They are both very easy to learn and is very useful for developing apps with web interfaces.

Thank you all, it looks like the solution is MySQL and PHP