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Top Forums Shell Programming and Scripting removing duplicate lines while maintaing coherence with second file Post 302545801 by adrunknarwhal on Tuesday 9th of August 2011 02:09:25 PM
Old 08-09-2011
removing duplicate lines while maintaing coherence with second file

So I have two files. The first file, file1.txt, has lines of numbers separated by commas.

file1.txt
Code:
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
Code:
"the cat is fat"
"I like eggs"
"fish live in water"
"the moon is made of cheese"
"fish have houses in the water"
"the cake is a lie"
"I like my eggs scrambled"

What I would like to do is remove the duplicate lines from file1.txt, the file with the numbers, but at the same time remove the equivalent line from file2.txt.

In other words: If line 5 from file1.txt is removed because it is a duplicate, then line 5 from file2.txt should also be removed.

I know that
Code:
awk '!x[$0]++' file1.txt > file1.txt.new

will work for removing duplicates, but it does not provide coherence with file2.txt.

thanks for the help in advance

Last edited by Scott; 08-09-2011 at 03:48 PM.. Reason: Added code tags to file[12].txt
 

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MV(1)							      General Commands Manual							     MV(1)

NAME
mv - move or rename files SYNOPSIS
mv [ -i ] [ -f ] [ - ] file1 file2 mv [ -i ] [ -f ] [ - ] file ... directory DESCRIPTION
Mv moves (changes the name of) file1 to file2. If file2 already exists, it is removed before file1 is moved. If file2 has a mode which forbids writing, mv prints the mode (see chmod(2)) and reads the standard input to obtain a line; if the line begins with y, the move takes place; if not, mv exits. In the second form, one or more files (plain files or directories) are moved to the directory with their original file-names. Mv refuses to move a file onto itself. Options: -i stands for interactive mode. Whenever a move is to supercede an existing file, the user is prompted by the name of the file followed by a question mark. If he answers with a line starting with 'y', the move continues. Any other reply prevents the move from occur- ring. -f stands for force. This option overrides any mode restrictions or the -i switch. - means interpret all the following arguments to mv as file names. This allows file names starting with minus. SEE ALSO
cp(1), ln(1) BUGS
If file1 and file2 lie on different file systems, mv must copy the file and delete the original. In this case the owner name becomes that of the copying process and any linking relationship with other files is lost. 4th Berkeley Distribution April 29, 1985 MV(1)
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