How can I use awk to compare specific columns in 2 files and print the difference.
I currently have this:
Code:
BEGIN {
OFS = FS = ","
}
NR == FNR {
b[$2] = $3
next
}
{
e = ""
for (x in b) {
if (match ($1, x)) {
if (RSTART == 1 && RLENGTH > length(e)) {
e=x
}
}
}
print $0, e, b[e]
}
It compares all fields against each other. I basically need to compare column1 if file1 against column1 of file2 and so forth. But I need to exclude column4 comparison against each other.
Thank you for your help.
Last edited by pludi; 04-06-2010 at 07:50 AM..
Reason: code tags, please...
Paraphrase:
you have two files, each with the same number of columns, for example columns=n.
you want to compare file1 and file two row by row column by column, ignoring column 4.
Then I think you want to print the differences, but how?
Could you give us a dummy "file1" and "file2" with desired output?
They're basically the same file, same columns etc, except that the datetime has changed and I've changed one other value to pick up if the diff works.
Here's what I have done so far:
I removed the datetime columns in this way:
Code:
#!/bin/bash
#---------------------------------------------------------------------
#This script removes the datetime stamp and pipes the old file to a new #file
#---------------------------------------------------------------------
awk -v oldfile="$1" -v newfile="$2"'BEGIN{FS=";";OFS=","}{$13=$14=$15=""}1' oldfile > newfile
I then intend to call the script from the command line in this way:
Then I use this command to compare the two files (this must also be in a script):
Code:
awk diff newfile1 newfile2 > resultfile
I want to compare the two files excluding the columns that generate the date time stamp.
I only need to see the differences made from file1 to file2 without picking up the timestamp column or then all the data gets selected since this is always changing.
I need all these different commands in scripts.
Can you please help me?
Last edited by Franklin52; 04-07-2010 at 03:10 AM..
Reason: Please use code tags!
HI!!
I am trying to compare two files using AWK but I have some problems. I need to count how many times letters are used in two texts. This is my script
{
long=length($0)
for (i=1;i<=long;i++)
{
aux=substr($0,i,1)
if ( aux != " " && aux != "" )
... (7 Replies)
I have a below requirement and trying to compare the files using awk
File 1 - Already stored on a prev day
id | text | email id
---------------------------------
89564|this is line 1 | xyz@sample.txt
985384|this is line 2 | abc@sample.txt
657342|this is line 3 |... (3 Replies)
Please help me to compare two files and remove the items in file2 from file1
file 1:delimited using pipe(|)
file1
00012|Description - 1|||||AA12345|1|AB12345|2|2012/06/03
AB123|Description - 2|||||AA12345|3|ZA11111|4|2012/06/04
11111|Description - 3|||||AP00012|1|AB12345|2|2012/06/03... (8 Replies)
Hi,
I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files.
To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
Hello,
I have a script which extracts the values from a csv file when a specific date is entered :
#!/bin/sh
awk 'BEGIN{printf("Entrez la date : "); getline date < "-"}
$0 ~ date {f=1;print;next}
/^{2}\//{f=0}
f' file1.csv
This script gives me a number of lines with different values.
... (6 Replies)
Hi,
I want to compare two files using awk and write an output based on if the records matched.
Both the files are space delimitted.
File A:
8351 00000000000636 2009044 -00001.000
8351 00000000000637 2009044 -00002.000
8351 00000000000638 2009044 -00001.000
8351 00000000000640... (7 Replies)
Hi. I'm new to awk and have searched for a solution to my problem, but haven't found the right answer yet. I have two files that look like this:
file1
Delete,3105551234
Delete,3105551236
Delete,5625559876
Delete,5625556789
Delete,5625553456
Delete,5625551234
Delete,5625556956... (8 Replies)
Hi i hope some awk gurus here can help me.. here is what i need i have 2 files:
File1
152445 516532 405088.pdf
152445 516533 405089.pdf
152491 516668 405153.jpg
152491 520977 408779.jpg
152491 0 409265.pdf
File2
516532 /tmp/MainStreet_Sum09_Front_FNL.pdf
516533... (9 Replies)
