File.chardev?(file_name)   →  true or false

Returns true if the named file is a character device.

Source Code

/*
* call-seq:
*   File.chardev?(file_name)   =>  true or false
*
* Returns <code>true</code> if the named file is a character device.
*/
static VALUE
test_c(obj, fname)
   VALUE obj, fname;
{
#ifndef S_ISCHR
#   define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
#endif

   struct stat st;

   if (rb_stat(fname, &st) < 0) return Qfalse;
   if (S_ISCHR(st.st_mode)) return Qtrue;

   return Qfalse;
}