Finding users currently accesing a directory

Is there any command/script to find a list of all users accessing a particular directory (from all machines on the network??)

Well, there is fuser... On a Linux system:

$ fuser -u LivinFree /home/goober
/home/goober:          16979c(goober)

Also, lsof (not installed at all sites, but you can install it).

I'm sure it's possible to whip up a little script to connect to several hosts, and run a specific command.

dont know if this is the right answer, but i hope i can help you:

type "w" in the shell and press return. from the manuals: ...the "w" utility prints a summary of the current activity of the system...displays who is logged in and what they are doing...

for more information "man w"

Thanks for the response. The fuser command for some reason is not showing all processes that are accessing the directory.