自己看吧，KBS应该类似的

int
Q_Goodbye()
{
    extern int started;
    time_t stay;
    char fname[STRLEN], notename[STRLEN];
    int logouts, mylogout = NA;
    struct userec tmpu;
    clear();
    prints("\n\n\n\n");
    if (USERDEFINE(currentuser, DEF_OUTNOTE)) {
        setuserfile(notename, "notes");
        if (dashf(notename))
            ansimore(notename, YEA);
    }
    if (USERDEFINE(currentuser, DEF_LOGOUT)) {
        setuserfile(fname, "logout");
        if (dashf(fname))
            mylogout = YEA;
    }
    if (mylogout) {
        logouts = countlogouts(fname);
        if (logouts >= 1) {
            user_display(fname, (logouts == 1) ? 1 :
                     (currentuser->numlogins % (logouts)) + 1,
                     YEA);
        }
    } else {
        if (fill_shmfile(2, "etc/logout", getBBSKey(GOODBYE_SHM))) {
            show_goodbyeshm();
        }
    }
    pressreturn();

    stay = now_t - login_start_time;
    if (started) {
        tracelog("%s exitbbs %ld", currentuser->userid, stay);
        if ((currentuser->userlevel & PERM_BOARDS)
            && (count_uindex(usernum) == 1))
            setbmstatus(0);
    }
    memcpy(&tmpu, currentuser, sizeof (tmpu));
    //多窗口不重复计算上站时间. 检查now_t防止时钟变化导致负的stay
    if (count_uindex(usernum) == 1 && now_t > tmpu.lastlogin)
        stay = now_t - tmpu.lastlogin;
    else
        stay = 0;
    tmpu.stay += stay;
    tmpu.lastlogout = now_t;
    tmpu.flags[0] &= ~BRDSORT_MASK;
    tmpu.flags[0] |= board_sorttype;
    updateuserec(&tmpu, usernum);
    if (strcmp(currentuser->userid, "guest") && count_uindex(usernum) == 0) {
        FILE *fp;
        char buf[STRLEN], *ptr;
        if ((fp = fopen("friendbook", "r")) != NULL) {
            while (fgets(buf, sizeof (buf), fp) != NULL) {
                char uid[14];
                ptr = strstr(buf, "@");
                if (ptr == NULL) {
                    del_from_file("friendbook", buf);
                    continue;
                }
                ptr++;
                strcpy(uid, ptr);
                ptr = strstr(uid, "\n");
                *ptr = '\0';
                if (!strcmp(uid, currentuser->userid))
                    del_from_file("friendbook", buf);
            }
            fclose(fp);
        }
    }
    if (started)
        u_exit();
    started = 0;
    exit(0);
}

【 在 Jtr@newsmth.net-SPAM.no (从此信奉单身主义) 的大作中提到: 】
: 好像只有ytht系和Mapple的代码有这个功能。
: 不知道代码是什么……
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