End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Process.euid=

Process.euid= user

static VALUE
proc_seteuid_m(VALUE mod, VALUE euid)
{
    check_uid_switch();
    proc_seteuid(OBJ2UID(euid));
    return euid;
}

Sets the effective user ID for this process. Not available on all platforms.

See also .euid .exec .egid= .exit also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0