Linux Common basic commands: uniq-to repeat

Uniq command

Function: Outputs or ignores duplicate rows in a file

Format: uniq [option] [File|stdin]

[Email protected]:~/linux/Uniq$CatGhostwu.txt192.168.1.2192.168.1.8192.168.1.3192.168.1.3192.168.1.9192.168.1.8192.168.1.8192.168.1.0192.168.1.3[email protected]:~/linux/Uniq$UniqGhostwu.txt192.168.1.2192.168.1.8192.168.1.3192.168.1.9192.168.1.8192.168.1.0192.168.1.3

A continuous repeating row is removed. If you want to keep only the unique file, you can use the option-u

[Email protected]:~/linux/uniquniq -192.168. 1.2 192.168. 1.8 192.168. 1.9 192.168. 1.0 192.168. 1.3

-C: To repeat and calculate the number of occurrences per row

[Email protected]:~/linux/Uniq$Uniq-C Ghostwu.txt1 192.168.1.2      1 192.168.1.8      2 192.168.1.3      1 192.168.1.9      2 192.168.1.8      1 192.168.1.0      1 192.168.1.3[email protected]:~/linux/Uniq$Cat-N ghostwu.txt1    192.168.1.2     2    192.168.1.8     3    192.168.1.3     4    192.168.1.3     5    192.168.1.9     6    192.168.1.8     7    192.168.1.8     8    192.168.1.0     9    192.168.1.3

Can be sorted with sort command, then repeat, the result is also unique

[Email protected]:~/linux/uniqsortuniq -C      1192.168.  1.0      1192.168.  1.2      3192.168.  1.3      3192.168.  1.8      1192.168.  1.9

-D: Show only duplicate rows

[Email protected]:~/linux/uniquniq -192.168. 1.3 192.168. 1.8

Linux Common basic commands: uniq-to repeat