Disk space tracker/file locking

[Jim Burwell]

Hi there,

Does anyone know of a shell script/program which does periodic disk space
tracking, on a directory level ?  i.e., if a directory grows by a certain 
ammount, the script tells me something like 'alert:  directory /usr/diskhog has
grown from 20Megs to 50 megs!'.   I have "watcher", but I havn't set it up.  It
looks like this might be able to do it with the proper watcher file.


Also, does anyone know how to do file locking from a shell script ??  I'd like
to do stuff like generate a new paths file (for Smail), move the on-line paths
into a "filename.old" file, and move the new file into place.  In general, I
need a way to have an exclusive write lock on a file so any other processes
that use the file wont get screwed up.. Is there a way to do this ?

Bye
Jim

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