( resource fam, string dirname, int depth, string mask )
fam_monitor_collection() requests monitoring for a collection of
files within a directory. The actual files to be monitored are specified by a
directory path in dirname, the maximum search
depth starting from this directory and a shell pattern
mask restricting the file names to look for.
A FAM event will be generated whenever the status of the files change.
The possible event codes are described in detail in the
constants part of this section.
See also fam_monitor_file(),