Differences between 2 Flat Files and process the differences
Hey Guru
Sorry for the confusion but
what I meant to ask was that
Code:
'NR==FNR{a[i++]=$1" "$2" "$3" "$4;next;}
by this you store first 4 columns of the whole file(all rows)
and then you move to the next
Code:
{x=$1" "$2" "$3" "$4; for (j in a){if (a[j] == x)next;}}1'
where you store the first 4 columns of each row of second file in x and compare them against the all rows(but first 4 columns only) one by one
what does this 1' means and after executing this awk script the final
file that we will have only 4 columns or the whole structure of the file
(it should compare only the first 4 columns but in the final file should have all 6 columns)
Thanks
J
Moderator's Comments:
Please use code tags.
Last edited by Scott; 07-17-2010 at 01:53 PM..
Reason: Code tags
Hi,
"diff" command takes two file names as arguements and gives the difference between the two.
How do I get the number of differences between two files ???
(Excluding whitespaces).
Don't ask me to count number of lines produced by "diff".
Thanks in advance,
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Discussion started by: Ariean
11 Replies
LEARN ABOUT OSX
column
COLUMN(1) BSD General Commands Manual COLUMN(1)NAME
column -- columnate lists
SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...]
DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by
default, from the standard input. Empty lines are ignored.
The options are as follows:
-c Output is formatted for a display columns wide.
-s Specify a set of characters to be used to delimit columns for the -t option.
-t 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 -s option. Useful for pretty-printing displays.
-x Fill columns before filling rows.
ENVIRONMENT
The COLUMNS, LANG, LC_ALL and LC_CTYPE environment variables affect the execution of column as described in environ(7).
EXIT STATUS
The column utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
(printf "PERM LINKS OWNER GROUP SIZE MONTH DAY " ;
printf "HH:MM/YEAR NAME
" ;
ls -l | sed 1d) | column -t
SEE ALSO colrm(1), ls(1), paste(1), sort(1)HISTORY
The column command appeared in 4.3BSD-Reno.
BUGS
Input lines are limited to LINE_MAX (2048) bytes in length.
BSD July 29, 2004 BSD
07-17-2010
