End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

File::Stat#setgid?

stat.setgid? → true or false

static VALUE
rb_stat_sgid(VALUE obj)
{
#ifdef S_ISGID
    if (get_stat(obj)->st_mode & S_ISGID) return Qtrue;
#endif
    return Qfalse;
}

Returns true if stat has the set-group-id permission bit set, false if it doesn’t or if the operating system doesn’t support this feature.

Example

File.stat("/usr/sbin/lpc").setgid?   #=> true

See also #readable_real? #setuid? #readable? #size also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1