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what is the use of uniq commmand?
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Answer / suitable
uniq command removes the duplicate lines from the sorted
file and display on the standard output. the original file
remains unchanged.
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / rhino
Small correction to Answer #3 If the line is repeated in
the very next line it will be removed , Else this will be
displayed as if it is a new number
Ex. as below -- This has been cross checked before answering
Ex : File duplitest has below lines
RohiBaby
RohiBaby
GunduBaby
ChinniBaby
RohiBaby
Rohith
cmd. : cat duplitest | uniq -- Gives below o/p
RohiBaby
GunduBaby
ChinniBaby
RohiBaby
Rohith
| Is This Answer Correct ? | 4 Yes | 0 No |
The Uniq command is used to report and Remove repeated line
in a file.
This is a value able tool for a lot of scripting and Testing.
Ex-
$ uniq Duplicate_line No_duplicate_line
If You want to see without repeated lines
Ex-
$ cat repeated_line_file | uniq
Thanks,
Jagadeeb@gmail.com
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / rhino
Sorry Typo error in Answer #4 -- Please read as below
** it will be removed -- it will not be removed
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / saurabh
This is the output of the command:
>cat skg.txt
aa
aa
bb
cc
bb
dd
cc
ee
--------------
>cat skg.txt | uniq
aa
bb
cc
bb
dd
cc
ee
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / amedela chandra sekhar
simple it display the unique data in the file
| Is This Answer Correct ? | 0 Yes | 0 No |
uniq command search the uniq data in file and if some
duplicate date then it put only single records in report.
For Example: cat testnumber.txt | uniq <enter>
File contents:
1233
456
678
1233
678
output file shows:
1233
456
678
| Is This Answer Correct ? | 3 Yes | 7 No |
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Unix Commands 
