Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
class method
File.ftype
File.ftype(file_name) → string
file.c
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static VALUE
rb_file_s_ftype(VALUE klass, VALUE fname)
{
struct stat st;
FilePathValue(fname);
fname = rb_str_encode_ospath(fname);
if (lstat_without_gvl(StringValueCStr(fname), &st) == -1) {
rb_sys_fail_path(fname);
}
return rb_file_ftype(&st);
}
Identifies the type of the named file; the return string is one of “file”, “directory”, “characterSpecial”, “blockSpecial”, “fifo”, “link”, “socket”, or “unknown”.
Example
File.ftype("testfile") #=> "file" File.ftype("/dev/tty") #=> "characterSpecial" File.ftype("/tmp/.X11-unix/X0") #=> "socket"