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#1 2014-12-21 10:15:03
- admin
- 管理员
uniq 和 sort -u 都是去除重复的行，他们一样吗？
看一个示例
# cat a.txt this is one this is three this is two this is two this is three this is three [root@qd ~]# uniq a.txt this is one this is three this is two this is three [root@qd ~]# sort -u a.txt this is one this is three this is two
这里可以看到 是一样的， sort -u 去除了所有重复的行。
而 uniq 是只有相邻的行相同的时候，保留一个，去除其他的。就是说不管几个保留一个。
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