checks if the directory is mentioned in the /proc/self/mountinfo file.
.SH OPTIONS
.IP "\fB\-h, \-\-help\fP"
-Print help and exit.
+Display help text and exit.
.IP "\fB\-q, \-\-quiet\fP"
Be quiet - don't print anything.
.IP "\fB\-d, \-\-fs\-devno\fP"