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Top Forums Shell Programming and Scripting Difference between two huge .csv files Post 302712395 by Dimple on Tuesday 9th of October 2012 06:53:05 AM
Old 10-09-2012
my file has around 1 lakh rows and 300 columns.

Though the command mentioned above is working fine but is taking more than 2 hrs to completely execute and is time consuming.

Is there any command that can specify only the column values and column number where we have the difference like

If there is difference at column number 3 and column number 7, resultant file will have value as
3,7 (Column Number)
Rahul,23 (Values present in file 1)

Rather than displaying "," for all the columns that are matching between two files. It only display columns where we have the mismatch but with a column number to keep the track.

Thanks
 

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COLUMN(1)							   User Commands							 COLUMN(1)

NAME
column - columnate lists SYNOPSIS
column [options] file... DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file or, by default, from standard input. Empty lines are ignored. OPTIONS
-c, --columns width Output is formatted to a width specified as number of characters. -t, --table Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with the characters supplied using the separator. Table output is useful for pretty-printing. -s, --separator separators Specify possible table delimiters (default is whitespace). -o, --output-separator separators Specify table output delimiter (default is two whitespaces). -x, --fillrows Fill columns before filling rows. -h, --help Print help and exit. ENVIRONMENT
The environment variable COLUMNS is used to determine the size of the screen if no other information is available. EXAMPLES
sed 's/#.*//' /etc/fstab | column -t BUGS
The util-linux version 2.23 changed -s option to be non-greedy, for example: $ printf "a:b:c 1::3 " | column -t -s ':' old output: a b c 1 3 new output (since util-linux 2.23) a b c 1 3 SEE ALSO
colrm(1), ls(1), paste(1), sort(1) HISTORY
The column command appeared in 4.3BSD-Reno. AVAILABILITY
The column command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux October 2010 COLUMN(1)
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