Lo, on Saturday, May 4, AE Roy did write: > I've set up my system with 15 computers and 60 users so that they have a > directory where they all can share files, under /home/staff, I have > them belongign to the group teacher who is the owner of /home/staff, and > the GUID is set on /home/staff. > > And I have a problem; If two teachers deceides to work on the same file at > the same time, then all changes made by the first to exit will be lost, > without him noticing.
Yup. Standard race condition. > I know CVS, but thats not an option. People I've talked to that know MS > say that in MS under the same situation, you'd gett a warning when someone > already had that file open, does anything similar exist for linux? > They all use OpenOffice.org to write these files. First, why is CVS not an option? Is it because you're working with binary files? Second: AFAIK, no, nothing similar to MS's behavior (``another program already has this file open'') exists for Linux, unless you implement it yourself. It's a fundamental difference in the semantics of the filesystem interface. The Unix/Linux answer is to provide a separate synchronization mechanism to prevent the race condition from occurring. It's up to the appliation. Most version-control systems like CVS, RCS, et al do this. If OpenOffice doesn't provide this functionality already, using some sort of lockfile as another poster suggested is the only other alternative I can think of. HTH, Richard -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
