使用快意灌水堂的FB2000代码，运行一段时间以后发现.PASSWDS变成800M，showuser
显示有很多空的ID，遂摹仿showuser.c写了一段小程序，把.PASSWDS里面ID是a到z之间
的写入NEWPASSWDS里面。经过我的试验，运行良好。以下是源代码，贴出来给大家参考。
注意使用NEWPASSWDS替换.PASSWDS前先备份.PASSWDS。

/*
    功能     :  转化.PASSWDS为NEWPASSWDS，去掉垃圾帐号
    注意事项 :  须要目前的 bbs.h
    Compile  :  gcc -o convertpasswd convertpasswd.c
    使用方式 :  convertpasswd
    代码放在跟showuser.c同一个目录下即$BBSHOME$/bbssrc/util/local_utl/
    厦门大学芙八BBS地址: 210.34.20.66
*/

#include <stdio.h>
#include "../../include/bbs.h"

struct userec aman;

main()
{
        FILE *inf;
        FILE *outf;
        int i, idcount = 0;

        inf = fopen("../../../.PASSWDS", "rb");
        if (inf == NULL) {
                printf("Error open .PASSWDS\n");
                exit(0);
        }
        outf = fopen("../../../NEWPASSWDS", "wb");
        if (outf == NULL) {
                printf("Error create NEWPASSWDS\n");
                exit(0);
        }

        for (i = 0; ; i++) {
                if (fread(&aman, sizeof(aman), 1, inf) <= 0) break;
                if (!(((aman.userid[0] >= 'a') && (aman.userid[0] <= 'z')) ||
                      ((aman.userid[0] >= 'A') && (aman.userid[0] <= 'Z'))))
                        continue;
                fwrite(&aman, sizeof(aman), 1, outf);
                idcount++;
        }

        fclose(inf);
        fclose(outf);
        printf("\nNEWPASSWDS created. %d id is written.\n", idcount);
}
--
FROM 210.34.9.179