嗨，我正试图使用unix排序功能。我想排序的第三列的文件
这是文件的内容

tcsh 541% cat file
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758

字符串
当我尝试按第1列排序时，

tcsh 533% sort -t, -nk1 file
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758

型
当我尝试按第2列排序时，它起作用了。

tcsh 534% sort -t, -nk1 file | sort -t, -nk2
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758

型
但是当我试图按第3列排序时，它不起作用。

tcsh 535% sort -t, -nk1 file | sort -t, -nk3
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758

tcsh 532% sort -t, -nk3 file
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758

型
预期输出为（根据Knitt的评论更新）

tcsh 532% sort -t, -nk3 file
3,2636,736,700,700,700,1083,880,880,880,88,792,0,260,25439,7984,43758
2,2587,769,629,629,629,890,890,890,890,89,801,0,184,24944,8018,42839
1,2622,867,686,686,686,880,880,880,880,88,792,0,246,25551,7977,43721

型
SORT版本：
542% sort --version sort（GNU coreutils）8.22版权所有（C）2013 Free Software Foundation，Inc.许可证GPLv 3+：GNU GPL version 3或更高版本<gnu.org/licenses/gpl.html>。这是自由软件：您可以自由更改和重新分发它。在法律允许的范围内，没有担保。作者：Mike Haertel和Paul Eggert