Hi,
I am trying to remove duplicate lines from a file. For example the contents of example.txt is:
this is a test
2342
this is a test
34343
this is a test
43434
and i want to remove the "this is a test" lines only and end up with the numbers in the file, that is, end up with:
2342... (4 Replies)
Hi,
I need to concatenate three files in to one destination file.In this if some duplicate data occurs it should be deleted.
eg:
file1:
-----
data1 value1
data2 value2
data3 value3
file2:
-----
data1 value1
data4 value4
data5 value5
file3:
-----
data1 value1
data4 value4 (3 Replies)
Hello,
I need help in putting duplicate lines within a section into another file. Here is what I'm struggling with:
Using this file data.txt:
ABC1 012345 header
ABC2 7890-000
ABC3 012345 Header Table
ABC4
ABC5 593.0000 587.4800
ABC5 593.5000 587.6580 <= dup need to remove
ABC5... (4 Replies)
So I have two files. The first file, file1.txt, has lines of numbers separated by commas.
file1.txt
10,2,30,50
22,6,3,15,16,100
73,55
78,40,33,30,11
73,55
99,82,85
22,6,3,15,16,100
The second file, file2.txt, has sentences.
file2.txt
"the cat is fat"
"I like eggs"
"fish live in... (6 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
You will write a script that will remove all HTML tags from an HTML document and remove any consecutive... (3 Replies)
Discussion started by: tburns517
3 Replies
LEARN ABOUT XFREE86
uniq
UNIQ(1) User Commands UNIQ(1)NAME
uniq - report or omit repeated lines
SYNOPSIS
uniq [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Filter adjacent matching lines from INPUT (or standard input), writing to OUTPUT (or standard output).
With no options, matching lines are merged to the first occurrence.
Mandatory arguments to long options are mandatory for short options too.
-c, --count
prefix lines by the number of occurrences
-d, --repeated
only print duplicate lines, one for each group
-D print all duplicate lines
--all-repeated[=METHOD]
like -D, but allow separating groups with an empty line; METHOD={none(default),prepend,separate}
-f, --skip-fields=N
avoid comparing the first N fields
--group[=METHOD]
show all items, separating groups with an empty line; METHOD={separate(default),prepend,append,both}
-i, --ignore-case
ignore differences in case when comparing
-s, --skip-chars=N
avoid comparing the first N characters
-u, --unique
only print unique lines
-z, --zero-terminated
line delimiter is NUL, not newline
-w, --check-chars=N
compare no more than N characters in lines
--help display this help and exit
--version
output version information and exit
A field is a run of blanks (usually spaces and/or TABs), then non-blank characters. Fields are skipped before chars.
Note: 'uniq' does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use 'sort -u' without
'uniq'. Also, comparisons honor the rules specified by 'LC_COLLATE'.
AUTHOR
Written by Richard M. Stallman and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report uniq translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO comm(1), join(1), sort(1)
Full documentation at: <http://www.gnu.org/software/coreutils/uniq>
or available locally via: info '(coreutils) uniq invocation'
GNU coreutils 8.28 January 2018 UNIQ(1)