Unix and Linux Discussions Tagged with lines |
|
Thread / Thread Starter |
Last Post |
Replies |
Views |
Forum |
|
|
|
7 |
15,395 |
UNIX for Beginners Questions & Answers |
|
|
|
6 |
8,007 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
11,560 |
UNIX for Beginners Questions & Answers |
|
|
|
5 |
10,188 |
UNIX for Advanced & Expert Users |
|
|
|
1 |
2,399 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
6,986 |
UNIX for Beginners Questions & Answers |
|
|
|
13 |
6,854 |
UNIX for Beginners Questions & Answers |
|
|
|
2 |
4,503 |
UNIX for Beginners Questions & Answers |
|
|
|
5 |
15,163 |
Shell Programming and Scripting |
|
|
|
5 |
15,300 |
Shell Programming and Scripting |
|
|
|
1 |
2,411 |
UNIX for Beginners Questions & Answers |
|
|
|
7 |
13,922 |
Shell Programming and Scripting |
|
|
|
6 |
2,784 |
UNIX for Beginners Questions & Answers |
|
|
|
2 |
7,980 |
UNIX for Advanced & Expert Users |
|
|
|
2 |
10,791 |
Programming |
|
|
|
2 |
2,006 |
UNIX for Beginners Questions & Answers |
|
|
|
3 |
6,855 |
Shell Programming and Scripting |
|
|
|
1 |
8,617 |
Shell Programming and Scripting |
|
|
|
1 |
7,252 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
4,757 |
UNIX for Beginners Questions & Answers |
|
|
|
6 |
4,857 |
UNIX for Beginners Questions & Answers |
|
|
|
5 |
4,653 |
UNIX for Beginners Questions & Answers |
|
|
|
2 |
3,246 |
UNIX for Beginners Questions & Answers |
|
|
|
10 |
2,503 |
UNIX for Beginners Questions & Answers |
|
|
|
3 |
4,100 |
UNIX for Beginners Questions & Answers |
|
|
|
3 |
4,999 |
Shell Programming and Scripting |
|
|
|
2 |
3,847 |
Shell Programming and Scripting |
|
|
|
6 |
7,583 |
Shell Programming and Scripting |
|
|
|
1 |
4,997 |
Shell Programming and Scripting |
|
|
|
3 |
6,572 |
Shell Programming and Scripting |
|
|
|
4 |
4,441 |
Shell Programming and Scripting |
|
|
|
5 |
3,431 |
UNIX for Beginners Questions & Answers |
|
|
|
8 |
3,274 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
1,243 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
1,600 |
UNIX for Beginners Questions & Answers |
|
|
|
3 |
2,301 |
UNIX for Beginners Questions & Answers |
|
|
|
2 |
1,767 |
UNIX for Beginners Questions & Answers |
|
|
|
18 |
3,544 |
UNIX for Beginners Questions & Answers |
|
|
|
6 |
1,430 |
UNIX for Beginners Questions & Answers |
|
|
|
7 |
6,647 |
UNIX for Beginners Questions & Answers |
uniq(1) General Commands Manual uniq(1)
Name
uniq - report repeated lines in a file
Syntax
uniq [-udc[+n][-n]] [input[output]]
Description
The command reads the input file comparing adjacent lines. In the normal case, the second and succeeding copies of repeated lines are
removed; the remainder is written on the output file. Note that repeated lines must be adjacent in order to be found. For further infor-
mation, see
Options
The n arguments specify skipping an initial portion of each line in the comparison:
-n Skips specified number of fields. A field is defined as a string of non-space, non-tab characters separated by tabs and spaces from its
neighbors.
+n Skips specified number of characters in addition to fields. Fields are skipped before characters.
-c Displays number of repetitions, if any, for each line.
-d Displays only lines that were repeated.
-u Displays only unique (nonrepeated) lines.
If the -u flag is used, just the lines that are not repeated in the original file are output. The -d option specifies that one copy of
just the repeated lines is to be written. The normal mode output is the union of the -u and -d mode outputs.
The -c option supersedes -u and -d and generates an output report in default style but with each line preceded by a count of the number of
times it occurred.
See Also
comm(1), sort(1)
uniq(1)