我有一个大文件如下

[0, 1, 2, 3, 4, 5, 6,    8, 9, 10               ],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10               ],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10               ],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11],

现在，我想更新整个文件，添加逗号(,)和数字(12)，使其看起来如下所示

[0, 1, 2, 3, 4, 5, 6,    8, 9, 10,                 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,                 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,                 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],

我无法手动完成此操作，是否有更简单的sed/awk命令来完成此操作？
我尝试了sed 's/]/, 12]/g' <path_to_the_file>，但这比我想要的方式错误

[0, 1, 2, 3, 4, 5, 6,    8, 9, 10                , 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10                , 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10                , 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],
    [0, 1, 2, 3, 4, 5, 6,    8, 9, 10,             11, 12],

这不是我想要的结果。