03-15-2012
I don't think that the output format from "diff" is suitable and it tends to get lost on large unsorted files.
The file must be a proper unix text file. In your sample, the data has no particular sorted order.
You'll need to "sort" both files to produce two new sorted output files in a work area. Then compare the two sorted files using two different unix "comm" commands. The differences will not be in the same order as the original file.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
compare two .dat files and difference will be moved into separate file.if anybody having code for this please send asap. using diff command, i don't know how to write shell programming.
and my first file is like this including Header and trailer
10Ç20060323Ç01(Header)
01ÇIÇbabuÇ3000
01ÇIÇbaluÇ4000... (1 Reply)
Discussion started by: kirankumar
1 Replies
2. Filesystems, Disks and Memory
Hi, Im trying to take a database backup. one of the files is 26 GB. I am using cp -pr to create a backup copy of the database. after the copying is complete, if i do du -hrs on the folders i saw a difference of 2GB.
The weird fact is that the BACKUP folder was 2 GB more than the original one!
... (1 Reply)
Discussion started by: 0ktalmagik
1 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I have a .txt file which has to be compared with a folder and print the difference to some other .txt file.
I did try with the diff command..i mean
diff /tmp/aaa/bbb.txt /space/aaa/bbb/
/***bbb.txt contains all the files names which may or may not exist in the folder bbb..so i need... (2 Replies)
Discussion started by: kumarsaravana_s
2 Replies
4. Shell Programming and Scripting
Hi
I have two files in unix. I need to compare two files and print the differed lines in other file
Eg
file1
1111
2222
3333
file2
1111
2222
3333
4444
5555
newfile
4444
5555
Thanks In advance (3 Replies)
Discussion started by: evvander
3 Replies
5. Shell Programming and Scripting
I have learned file comparison from my previous post here. Then, it is comparing the whole line. Now, i have a new problem.
I have two files with 3 columns separated with a "|". What i want to do is to compare the second and third column of file 1, and the second and third column of file 2. And... (4 Replies)
Discussion started by: kingpeejay
4 Replies
6. Shell Programming and Scripting
I have a 500 MB XML file from a FileMaker database export, it's formatted horribly (no line breaks at all). The node structure is basically
<FMPXMLRESULT>
<METADATA>
<FIELD att="............." id="..."/>
</METADATA>
<RESULTSET FOUND="1763457">
<ROW att="....." etc="....">
... (16 Replies)
Discussion started by: JRy
16 Replies
7. Shell Programming and Scripting
Hi all
i want to write program with shell script that able compare two file content and if one of lines of file have # at the first of string or nothing find same string in one of two file . remove the line in second file that have not the string in first file. for example:
file... (2 Replies)
Discussion started by: saleh67
2 Replies
8. Shell Programming and Scripting
Good morning all,
I have a problem that is one step beyond a standard awk compare.
I would like to compare three files which have several thousand records against a fourth file. All of them have a value in each row that is identical, and one value in each of those rows which may be duplicated... (1 Reply)
Discussion started by: nashton
1 Replies
9. Shell Programming and Scripting
Hello, my first thread here.
I've been searching and fiddling around for about a week and I cannot find a solution.:confused:
I have been converting all of my home videos to HEVC and sometimes the files end up smaller and sometimes they don't. I am currently comparing all the video files... (5 Replies)
Discussion started by: Josh52180
5 Replies
10. Shell Programming and Scripting
I have two files:
smw:/working/iso_testing # cat a
QConvergeConsoleCLI-1.1.03-49.x86_64.rpm
aaa_base-13.2+git20140911.61c1681-1.3.i586.rpm
acpica-20140724-2.1.2.i586.rpm
test.rpm
smw:/working/iso_testing # cat b
QConvergeConsoleCLI-1.1.03-49.x86_64.rpm... (12 Replies)
Discussion started by: jedlund21
12 Replies
COMM(1) BSD General Commands Manual COMM(1)
NAME
comm -- select or reject lines common to two files
SYNOPSIS
comm [-123i] file1 file2
DESCRIPTION
The comm utility reads file1 and file2, which should be sorted lexically, and produces three text columns as output: lines only in file1;
lines only in file2; and lines in both files.
The filename ``-'' means the standard input.
The following options are available:
-1 Suppress printing of column 1.
-2 Suppress printing of column 2.
-3 Suppress printing of column 3.
-i Case insensitive comparison of lines.
Each column will have a number of tab characters prepended to it equal to the number of lower numbered columns that are being printed. For
example, if column number two is being suppressed, lines printed in column number one will not have any tabs preceding them, and lines
printed in column number three will have one.
The comm utility assumes that the files are lexically sorted; all characters participate in line comparisons.
ENVIRONMENT
The LANG, LC_ALL, LC_COLLATE, and LC_CTYPE environment variables affect the execution of comm as described in environ(7).
EXIT STATUS
The comm utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
cmp(1), diff(1), sort(1), uniq(1)
STANDARDS
The comm utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
The -i option is an extension to the POSIX standard.
HISTORY
A comm command appeared in Version 4 AT&T UNIX.
BUGS
Input lines are limited to LINE_MAX (2048) characters in length.
BSD
January 26, 2005 BSD