如何自动协调 /etc/group 和 /etc/gshadow

Question

运行grpck检查组，我看到这些错误：

 'twinky' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 'dipsy' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 'laalaa' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 'po' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 'noonoo' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 'dipsy' is a member of the 'foo' group in /etc/group but not in /etc/gshadow
 ...

......还有很多。我不确定这是怎么发生的，我想把它清理干净。我知道我可以手动编辑/etc/gshadow，但我宁愿让操作系统来做，以防止打字错误和体力劳动。

有什么可以自动将一个组调和成 gshadow 的吗？也许类似（编造）：

# grpfix foo

我已经在各种与组相关的命令上尝试过 man 并用谷歌搜索，但到目前为止我还没有找到答案。

Answer 1

男人有我之前错过的答案：

grpconv

http://linux.die.net/man/8/grpconv：

grpconv 命令从组和一个可选的现有 gshadow 创建 gshadow。