2.30 How can I get a "count" of files satisfying specific naming conventions?

From the CI,

listfile fileset,6 > list6

echo ![finfo("list6","EOF")]

Using the posix shell,

ls -l|wc -l

or callci "listf,6"|wc -l

My personal favorite, however, if you feel like living just a little dangerously,

PURGE fileset

and then respond NO! Quickly!

If you use a fileset expression, then even if only one file qualifies, it will still ask whether you want to continue with the purge. Unfortunately, the PURGE command does not support CIOR so creating a command file to protect you from yourself is not an option.