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) BSD General Commands Manual UNIQ(1)
NAME
uniq -- report or filter out repeated lines in a file
SYNOPSIS
uniq [-c | -d | -u] [-i] [-f num] [-s chars] [input_file [output_file]]
DESCRIPTION
The uniq utility reads the specified input_file comparing adjacent lines, and writes a copy of each unique input line to the output_file. If
input_file is a single dash ('-') or absent, the standard input is read. If output_file is absent, standard output is used for output. The
second and succeeding copies of identical adjacent input lines are not written. Repeated lines in the input will not be detected if they are
not adjacent, so it may be necessary to sort the files first.
The following options are available:
-c Precede each output line with the count of the number of times the line occurred in the input, followed by a single space.
-d Only output lines that are repeated in the input.
-f num Ignore the first num fields in each input line when doing comparisons. A field is a string of non-blank characters separated from
adjacent fields by blanks. Field numbers are one based, i.e., the first field is field one.
-s chars
Ignore the first chars characters in each input line when doing comparisons. If specified in conjunction with the -f option, the
first chars characters after the first num fields will be ignored. Character numbers are one based, i.e., the first character is
character one.
-u Only output lines that are not repeated in the input.
-i Case insensitive comparison of lines.
ENVIRONMENT
The LANG, LC_ALL, LC_COLLATE and LC_CTYPE environment variables affect the execution of uniq as described in environ(7).
EXIT STATUS
The uniq utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The historic +number and -number options have been deprecated but are still supported in this implementation.
SEE ALSO
sort(1)
STANDARDS
The uniq utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD
December 17, 2009 BSD