.\" SYNOPSIS part
.\"
.SH SYNOPSIS
-.B "ifrename [-c configfile] [-p] [-d] [-u] [-v] [-V] [-D]"
+.B "ifrename [-c configfile] [-p] [-d] [-u] [-v] [-V] [-D] [-C]"
.br
.B "ifrename [-c configfile] [-i interface] [-n newname]"
.\"
.I dry-run
option, this is a good way to debug complex configurations or trivial
problems.
+.TP
+.B -C
+Count matching interfaces. Display the number of interface matched,
+and return it as the exit status of ifrename.
+.br
+The number of interfaces matched is the number of interface on the
+system for which a mapping was found in the config file (which is
+different from the number of interface renamed).
.\"
.\" AUTHOR part
.\"