Hi,
How can i delete the second and subsequent occurrence of a particular string from a file ?
eg) test.txt
cattle
bat
battle
mat
matter
cattle
cattle
my output file should be
cattle
bat
battle
mat
matter (12 Replies)
I am looking to replace two or more strings on different lines using sed, but not with the same variable. IE
# cat xxx.file
<abc>
abc def ghi
abc def ghi
abc def ghi
currently I can only change each line with the same pattern:
# sed -e '/<abc>/!s/abc\(.*\)/jkl mno/' xxx.file
abc jkl mno... (3 Replies)
Hello Experts,
I have two files called "old" and "new". My old file contains 10 lines and my new file contains 10 + "n" lines.
The first field in both these files contain ID. I sort these two files on ID. I am interested in only the lines that are in the new file and not in old.
I tried... (4 Replies)
I have an input text that looks like this (comes already sorted):
on Caturday 22 at 10:15, some event
on Caturday 22 at 10:15, some other event
on Caturday 22 at 21:30, even more events
on Funday 23 at 11:00, yet another event
I need to delete all the matching words between the lines, from... (2 Replies)
Hello,
Merry Christmas to all! I wish you the best for these holidays and the best for the next year 2011.
I'd like your help please, I need to delete all the rows in the third column of my file, but without touching nor changing the first and last value position, this is an example of my... (2 Replies)
Hi. I'm hoping that someone can help me with a bash script to delete a block of lines from a file.
What I want to do is delete every line between two stings that are the same,
including the line the first string is on but not the second.
(Marked lines to match with !)
For example if I... (2 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
I am trying to extract a table of data (mysql query output) from a log file. I need to print everything below the header and not past the end of the table. I have spent many hours searching with little progress. I am matching the regexp +-\{99\} with no problem. I just can't figure out how to print... (5 Replies)
If we want to display lines from file leaving last 30 lines. i dont know the count of lines in file (14 Replies)
Discussion started by: mirwasim
14 Replies
LEARN ABOUT DEBIAN
combine
COMBINE(1)COMBINE(1)NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO join(1)AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)
08-18-2016
