UNIX for Advanced & Expert Users

What would be a practical way of making sure files I upload to/edit in a particular directory on a server always have the correct group permissions?

I'm forgetful, so I try to automate things like chgrp'ing the files when I'm done. I could write a script to be run by cron. Is that the only way, or are there any options/variables I can use with ssh and scp so that files created by my user automatically have the right group and permissions?

Note: Files should belong to a certain group if they are located in a certain directory, but elsewhere on the server, they should belong to my primary group.

(The story: This is a web server on which I have my personal homepage and on which there are also areas which need to be editable by the whole department. The admins have created a group for that, www-ourdept. How do I avoid forgetting to chgrp/chown the stuff after I'm done? Apart from using a post-it as reminder on the monitor of my PC, of course.)

Does that certain directory belong to the group? Setting the SETGID bit on that directory would cause every file created there to belong to that group.

Code:

chmod g+s /your/directory

It seems the admins have done that for me. I didn't realize that when I posted.

What remains is the problem of making everything in the directory group-writable automatically. I seem to remember that that's what I kept on forgetting when editing group web pages in the past (I just haven't done it in a while).

Is there a way to set the umask for a particular directory or something? Maybe along the lines of:

Code:

if expr $PWD : <directory> >/dev/null
then
    umask u=rw,g=rw,o=
fi

But how do I get that excecuted every time I log on to work on group web pages, but not when I log on to work on my personal web page? .bashrc won't work... It would have to be read after I cd to the directory :-/