On Oct 23, 1:25 pm, Peng Yu <pengyu...@gmail.com> wrote: > As far as I know, linux doesn't support a system level way to figure > out all the symbolic links point to a give file. I could do a system > wide search to look for any symbolic link that point to the file that > I am interested in. But this will be too slow when there are many > files in the systems. > > I'm thinking of writing a daemon program which will build a database > on all the symbolic links that point to any files. Later on, whenever > I change or remove any file or symbolic link, I'll will notify the > daemon process the changes. By keeping this daemon process running, I > can quickly figure out what symbolic links are pointing to any give > file. > > But I have never make a daemon program like this in python. Could > somebody point me what packages I need in order to make a daemon > process like this? Thank you!
I would recommend looking into some articles on creating well behaved daemons and review python recipes for creating daemonic processes. >From there, it's mostly a matter of writing code which is fairly self reliant. The ability to write to the system logs (Python module syslog) helps quite a bit. http://www.google.com/search?q=writing+daemons http://code.activestate.com/recipes/278731/ I typically write a program which will run from the command line well, then add a switch to make it a daemon. That way, you have direct control over it while writing the daemon, but can then daemonize it (using the activestate recipe) without making changes to the code. Garrick -- http://mail.python.org/mailman/listinfo/python-list
