当“LANG”未设置时，为什么“sort”表现得很奇怪？

时间：2015-01-31 08:22:16

标签： linux sorting

在我的bash中，＆＃34; LANG＆＃34;被设置为＆＃34; en_us.UTF-8＆＃34;和＆＃34;排序＆＃34;工作良好。但是，如果我解开＆＃34; LANG＆＃34;，那么＆＃34; sort＆＃34;很奇怪。即使用＆＃34; LC_ALL = C＆＃34;或＆＃34; LC_ALL = POSIX＆＃34;。任何人都知道为什么＆＃34;排序＆＃34; ＆＃34; LANG＆＃34;＆＃34; LANG＆＃34;没设置？

$ echo $LANG
en_US.UTF-8

$ sort -t$'\t' -k1,3 -gr
-4.445905   1   0.965933
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152
-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702

-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   1   0.965933
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152

$ unset LANG

$ sort -t$'\t' -k1,3 -gr
-4.445905   1   0.965933
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152
-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702

-4.445905   1   0.965933
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152
-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702

$ LC_ALL=POSIX sort -t$'\t' -k1,3 -gr
-4.445905   1   0.965933
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152
-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702

-4.445905   1   0.965933
-4.445905   1   0.76126
-4.445905   1   0.74816
-4.445905   1   0.633251
-4.445905   1   0.596921
-4.445905   1   0.464271
-4.445905   1   0.406553
-4.445905   1   0.350968
-4.445905   1   0.307701
-4.445905   1   0.188411
-4.445905   1   0.0377354
-4.445905   1   0.0221152
-4.445905   -1  0.999663
-4.445905   -1  0.987287
-4.445905   -1  0.97882
-4.445905   -1  0.969835
-4.445905   -1  0.96705
-4.445905   -1  0.964982
-4.445905   -1  0.920791
-4.445905   -1  0.901001
-4.445905   -1  0.877351
-4.445905   -1  0.87702

1 个答案:

答案 0 :(得分：1)

显然我没有正确理解排序键选项＆＃34; -k＆＃34;。它实际上是从POS1到POS2包括＆＃34;所以＆＃34; -k 1,3＆＃34;表示使用键column1 + column2 + column3进行排序。因此，后两个＆＃34;排序＆＃34;正在做正确的事情，而第一个实际上很奇怪。

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