11-22-2001
uniq
Try using this command: UNIQ
The uniq utility will read an input file comparing adjacent
lines, and write one copy of each input line on the output.
The second and succeeding copies of repeated adjacent input
lines will not be written.
10 More Discussions You Might Find Interesting
1. IP Networking
Good day :)
I recently checked some stuff on my gateway and discovered what I believe is an unneeded route entry.
# route -n
Kernel IP routing table
Destination Gateway Genmask ... Iface
287.265.45.0 0.0.0.0 255.255.255.0 ... eth0
192.168.0.0 0.0.0.0 ... (3 Replies)
Discussion started by: J.P
3 Replies
2. UNIX for Dummies Questions & Answers
hi folks...
i have to write a sript that removes unnecessary backup-files.
iam new to shell scripting so please be patient with me. and no its not homework :p
these files look like "javacore303330.1209029863.txt" where the first number is the PID and the second is the timestamp. so there can be... (5 Replies)
Discussion started by: cypher82
5 Replies
3. UNIX for Advanced & Expert Users
HI all,
I have a file with following data - test1
"ABC,D",1234,"XYZ,QWER",1234
"SZXA",9870,"ASD,QWERT",234
"XZ,SD",9478,"ADCS,AXZ",876
"WESR",8764,"AQZXAS",9888
"WESR",9898,"WESDRTSAW",3323
I need to get rid of unnecessary commas in fields having double quotes.
Ouput -
... (1 Reply)
Discussion started by: sumeet
1 Replies
4. Shell Programming and Scripting
Hi,
I'm not a expert in shell programming, so i've come here to take help from u gurus.
I'm trying to tailor a csv file that i got to make it work for the LOAD FROM command.
I've a datatable csv of the below format -
--in file format
xx,xx,xx ,xx , , , , ,,xx,
xxxx,, ,, xxx,... (11 Replies)
Discussion started by: dvah
11 Replies
5. Solaris
I want to clean used solaris OS and then to give another developer.
How can I understand that difference between system file/folder and others.
I want to delete apart from the files/folders.
I need tools or scripts like disk-cleanup or something like that.
#usr>du -s -h *
6.6M 4lib
... (1 Reply)
Discussion started by: getrue
1 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have a huge file which has Lacs of lines. File system got full.
I want your guys help to suggest me a solution so that I can remove all lines from that file but not last 50,000 lines. I want solution which can remove lines from existing file so that I can have some space left with. (28 Replies)
Discussion started by: prashant2507198
28 Replies
7. Shell Programming and Scripting
I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted.
keepout:
user1
buser3
anuser19
notheruser27
database:
user1,2343,"information about",field,blah,34
user2,4231,"mo info",etc,stuff,43
notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
Discussion started by: esoffron
4 Replies
8. Shell Programming and Scripting
i have data as below
123,"paul phiri",paul@yahoo.com,"po.box 23, BT","Eco Bank,Blantyre,Malawi"
i need an output to be
123,"paul phiri",paul@yahoo.com,"po.box 23 BT","Eco Bank Blantyre Malawi" (5 Replies)
Discussion started by: mathias23
5 Replies
9. Shell Programming and Scripting
Hello everyone,
Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done.
My problem is the following:
I have a file where each line is a sequence of IP addresses, example :
10.0.0.1 10.0.0.2
10.0.0.5 10.0.0.1 10.0.0.2... (5 Replies)
Discussion started by: MisterJellyBean
5 Replies
10. Shell Programming and Scripting
I have been searching and trying to come up with an awk that will perform the following on a
converted text file (original is a pdf).
1. Since the first two lines are (begin with) text they are removed
2. if $1 is a number then all text is merged (combined) into one line until the next... (3 Replies)
Discussion started by: cmccabe
3 Replies
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)