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Top Forums Shell Programming and Scripting compare multiple files and get the difference Post 302596442 by deepakiniimt on Tuesday 7th of February 2012 11:26:37 AM
Old 02-07-2012
compare multiple files and get the difference

Hi all,

i have 50 files .data should be same in these 50 files , so my task is to find the difference. i need a logic , which finds difference between all files and print in output file with file name where it found that difference .
i tried below logic , but its not giving me what i want.
let me give example
i tried this logic:-
cat $TMPDIR/*lis* | sort | egrep -ve $EXCEPTIONS_LIST_GREP | uniq -u| while read line
do
echo "Unique value found : ${line} : in file : `grep -lx "${line}" $TMPDIR/CELL*`"
aa=`grep -lx "${line}" *list*`
echo "$aa"
done >>$TMPDIR/ai see below data in 6 files which have differ by 1 file :-

cat CELL*|sort|egrep -ve HOTFIXED -e old -e B4 -e b4|sort|grep libsyncsor
1213068711 8303736 pbin/lib/libsyncsort.so
1213068711 8303736 pbin/lib/libsyncsort.so
2424480061 8303736 pbin/lib/libsyncsort.so
330122325 8303736 pbin/lib/libsyncsort.so
330122325 8303736 pbin/lib/libsyncsort.so

now above logic which i gave here , is giving 1 file only (bold 1), see the example below:-

cat CELL*|sort|egrep -ve HOTFIXED -e old -e B4 -e b4|sort|uniq -u
2424480061 8303736 pbin/lib/libsyncsort.so


echo from script :-
+ echo Unique value found : 2424480061 8303736 pbin/lib/libsyncsort.so : in file : /tmp/check_sync_20120207_231421_PID_29642/CELLTADM_LIST_2_celltadm@fra-siapp01_list

But we see three type of files in (1st column differes) , 1st-1213068711 , 2nd -2424480061 , 3rd-330122325
so it should give all these 3 difference.

actually i am comparing one directory structure on multiple servers, i copied all files name to different files (server name wise), now remaining thing to get the difference , on which server ,what file is different
 

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SORT(1) 						      General Commands Manual							   SORT(1)

NAME
sort - sort a file of ASCII lines SYNOPSIS
sort [-bcdfimnru] [-tc] [-o name] [+pos1] [-pos2] file ... OPTIONS
-b Skip leading blanks when making comparisons -c Check to see if a file is sorted -d Dictionary order: ignore punctuation -f Fold upper case onto lower case -i Ignore nonASCII characters -m Merge presorted files -n Numeric sort order -o Next argument is output file -r Reverse the sort order -t Following character is field separator -u Unique mode (delete duplicate lines) EXAMPLES
sort -nr file # Sort keys numerically, reversed sort +2 -4 file # Sort using fields 2 and 3 as key sort +2 -t: -o out # Field separator is : sort +.3 -.6 # Characters 3 through 5 form the key DESCRIPTION
Sort sorts one or more files. If no files are specified, stdin is sorted. Output is written on standard output, unless -o is specified. The options +pos1 -pos2 use only fields pos1 up to but not including pos2 as the sort key, where a field is a string of characters delim- ited by spaces and tabs, unless a different field delimiter is specified with -t. Both pos1 and pos2 have the form m.n where m tells the number of fields and n tells the number of characters. Either m or n may be omitted. SEE ALSO
comm(1), grep(1), uniq(1). SORT(1)
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