If you can no longer write to your home directory, the .oldnewsrc will not be saved and the new one will not be written, so the next time you run trn, you will not be subscribed to any newsgroups, and all the information about which articles you have read will be gone. In addition, if you have CGI scripts that expect to write to disk, they won't work properly any more. However, since quota does not affect the reading of files, your non-CGI web pages will continue to be accessible as usual. As you can no doubt deduce, it is wise to not allow your grace period to run out, and to manage your diskspace so that you remain within your allotted disk quota. If you find that you have exceeded the grace period, don't try to run any programs or do any editing until you have deleted enough files to get your account back within quota.
Many files are OK to delete .
In the example above, the mail directory is using up the most space, followed by the stuff directory. The total usage is 888K, which is what quota reported. That's because it is a symbolic link and does not count against the space in the home directory. There are many kinds of, and many reasons for having files. We have written a program called filecheck which will look at all of your files and tell you whether they are recognised system files or not.