Here is a slightly different way to do it (which copies the results back into the 2nd input file if awk successfully processes the files). It should run slightly faster for files that contain duplicated lines in file1 (as in your example) and for files where lines found in file1 appear multiple times in file2 (as in your example):
This was written and tested using a Korn shell, but should work with any shell that is based on Bourne shell syntax. (It will not work with shells that use csh syntax.)
If you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
Last edited by Don Cragun; 07-24-2016 at 03:01 AM..
Reason: Fix typo: s/(/)/
This User Gave Thanks to Don Cragun For This Post:
I have a text file with following content (3 lines)
filename : output.txt
first line:12/12/2008
second line:12/12/2008
third line:Y
I would like to know how we can replace 'Y' with 'N' in the 3rd line keeping 1st and 2nd lines same as what it was before.
I tried using cat output.txt... (4 Replies)
Hi all,
I would like to replace some columns from file1 with columns from file2. Currently, I'm able to do it with the following command:
awk 'NR==FNR{a=$1;b=$2;c=$3;next;}
{$2=a;$4=b;$5=c;print}' file2 file1 > temp
mv -f temp file1
First, i make the changes and save it as a temp... (1 Reply)
Hello Gurus,
I have a text file containing nearly 12,000 tab delimited characters with 4000 rows. If the file size is small, excel can convert the text into coloumns. However, the file that I have is very big. Can some body help me in solving this problem?
The input file example,
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My question:
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I would like to have experts help on below action.
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4 0.04972604 KLHL28
4 0.0497332 CSTB
4 0.04979822 AIF1
4 0.04983331 DECR2
4 0.04990344 KATNB1
4
4
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Hi all,
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species-names.txt
Abaca-bunchy-top-virus ((((Abaca-bunchy-top-virus((Babuvirus((Unassigned((Nanoviridae((Unassigned))))
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Hi Friends,
I have the following input file
cat input
chr1 100 200 0.1 0.2 na 1 na nd
chr1 105 200 0.1 0.2 1 1 na 98
chr1 110 290 nf 1 na nd na 1
chr2 130 150 12 3 na 1 na 1
chr3 450 600 nf nf na 10 na nd
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input file:
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