本文只总结一些常用的用法,更详细的说明见man uniq
和 uniq --help
。
uniq命令
uniq命令主要用于去重。
需要注意的是,不相邻的行不算重复值。
语法格式
1
| uniq [OPTION]... [INPUT [OUTPUT]]
|
OPTION |
说明 |
-c |
统计出现的次数 |
-d |
只显示被计算为重复的行 |
-D |
显示所有被计算为重复的行 |
-c |
显示唯一值,即没有重复值的行 |
-i |
忽略大小写 |
-z |
在末尾使用\0,而不是换行符 |
-s |
跳过多少个字符开始比较重复值 |
-f |
跳过多少个字段(field)开始比较重复值 |
-w |
比较重复值时每行比较的最大长度,即对每行多长的字符进行比较 |
实例
有以下ip地址:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
| 183.204.149.137 82.190.251.242 183.204.151.206 183.196.249.224 125.119.187.50 125.118.108.202 114.68.82.26 183.204.149.90 183.204.149.90 125.119.185.164 125.119.185.164 183.196.249.224 125.119.185.164 183.156.95.175 183.156.95.175 183.196.249.224 183.156.93.246 183.156.95.175 183.156.95.175 183.156.93.246 183.156.95.175 183.156.95.175 114.68.82.26 183.156.95.175 125.120.25.172 183.156.93.246 183.156.95.175 183.156.95.175 183.156.93.246 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.26 183.156.95.190 125.119.187.63 114.68.82.26 125.119.187.63 125.119.187.63 125.119.187.63 125.119.185.214 114.68.82.29 114.68.82.26 114.68.82.29 114.68.82.27 114.68.82.26 183.196.253.128 114.68.82.26 114.68.82.27 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.26 114.68.82.29 183.196.255.237 114.68.82.26 114.68.82.27 114.68.82.26 114.68.82.26 114.68.82.27 183.196.253.128 183.196.253.125 183.196.253.128 183.196.253.128 122.224.179.242 82.186.85.249 82.186.84.18 82.186.85.223 183.204.148.79 183.196.255.237 183.204.163.137 183.204.150.12 183.204.150.12 183.204.150.12
|
排序去重,重复数由多到少排序:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
| [root@Rohn ~] 20 114.68.82.26 9 183.156.95.175 4 183.196.253.128 4 183.156.93.246 4 125.119.187.63 4 114.68.82.27 3 183.204.150.12 3 183.196.249.224 3 125.119.185.164 3 114.68.82.29 2 183.204.149.90 2 183.196.255.237 1 82.190.251.242 1 82.186.85.249 1 82.186.85.223 1 82.186.84.18 1 183.204.163.137 1 183.204.151.206 1 183.204.149.137 1 183.204.148.79 1 183.196.253.125 1 183.156.95.190 1 125.120.25.172 1 125.119.187.50 1 125.119.185.214 1 125.118.108.202 1 122.224.179.242
|