08-11-2005
$0 ~ "^\t"
Selects records starting with a tabulation character.
Those records contain lines that are in file 2 only.
All the code from awk ' to the last ' is awk code (perhaps nawk or gawk on your system).
You can't use these commands directly in a shell script.
An example of my script execution :
/path/to/previous_list
file1.c
file2.c
file3.c
/path/to/actual_list
file2.c
file3.c
file4.c
file5.c
Output
These files have been created
file4.c
file5.c
These files have been removed
file1.c
The two files /path/to/previous_list and /path/to/actual_list must be sorted (needs by the command comm)
Jean-Pierre.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello
I want to compare the content of two directories recursively to check if the two directories have the same files. How can I do that? (2 Replies)
Discussion started by: xyzt
2 Replies
2. Shell Programming and Scripting
Hello Everybody!!!!!!!!! Request you to help me with the below mentioned issue:
I have 2 files say,
File 1:
a|4|7
b|3|2
c|8|8
d|8|9
File 2:
a|4|6
b|2|2
c|8|8
d|9|8
The third file(output file) should have:
Data mismatch in row 1 column 3
Data mismatch in row 2 coumn 2
Data... (3 Replies)
Discussion started by: abhijeet1409
3 Replies
3. Shell Programming and Scripting
I have very abstract need of "comparing two variables" and take subsequent actions.
please refer to image below
https://lh3.googleusercontent.com/-frNk5iA3q1c/TjI3lE0sWOI/AAAAAAAAAIE/fxzB1w07gas/script_block.JPG
I have a part of script which reads a file and generates variables based on... (4 Replies)
Discussion started by: animesharma
4 Replies
4. Shell Programming and Scripting
Hi,
I'm new to perl and i have to write a perl script that will compare to log/txt files and display the differences. Unfortunately I'm not allowed to use any complied binaries or applications like diff or comm.
So far i've across a code like this:
use strict;
use warnings;
my $list1;... (2 Replies)
Discussion started by: dont_be_hasty
2 Replies
5. Shell Programming and Scripting
Hi
*
I have two text files which has the file size, timestamp and the file name. I need to compare these two files and get the differences in the output format. Can anyone help me out with this.
*
cat file1.txt
*474742 Apr 18* 2010 sample.log
*135098 Apr 18* 2010 Testfile
134282 Apr 18* 2010... (7 Replies)
Discussion started by: Sendhil.Kumaran
7 Replies
6. Shell Programming and Scripting
I want to compare 2 files and create third file with uncommon content.
e.g.
file1
ajay suhas tom nisha vijay mahish
file2
ajay suhas tom nisha
expected output file content
vijay mahish
Is it possible in single command ?
Thanks,
Ajay (6 Replies)
Discussion started by: ajaypatil_am
6 Replies
7. Shell Programming and Scripting
I have 2 files that need to be compared. Email the differences if something is different and don't email if nothing is different. One or both of the files could be empty. One or both could have data in them.
example files
backup.doc.$(date +%y%m%d) file size is 0
backup.doc.$(TZ=CST+24... (4 Replies)
Discussion started by: jabbott3
4 Replies
8. Shell Programming and Scripting
Hi....I'm having 2 xml files, one is having some special characters and another is a clean xml file does not have any special characters. Now I need one audit kind of file which will show me only from which line the special characters have been removed and the special characters.
Can you please... (1 Reply)
Discussion started by: Krishanu Saha
1 Replies
9. Shell Programming and Scripting
Hi All,
can some one suggest me a tool to compare file ownership/permission and contents of files located at two different unix servers?
Thanks,
Pranav (1 Reply)
Discussion started by: Pranav Bhasker
1 Replies
10. UNIX for Beginners Questions & Answers
Good day to all.
I'm relatively new in using the Sun Solaris OS. I would like to request your expertise in helping to solve a problem that I have at work. Not sure if this has been asked before but I have tried searching through the internet to no avail.
Basically I have 2 sun solaris... (8 Replies)
Discussion started by: Fossil_84
8 Replies
LEARN ABOUT OPENSOLARIS
comm
comm(1) User Commands comm(1)
NAME
comm - select or reject lines common to two files
SYNOPSIS
comm [-123] file1 file2
DESCRIPTION
The comm utility reads file1 and file2, which must be ordered in the current collating sequence, and produces three text columns as output:
lines only in file1; lines only in file2; and lines in both files.
If the input files were ordered according to the collating sequence of the current locale, the lines written will be in the collating
sequence of the original lines. If not, the results are unspecified.
OPTIONS
The following options are supported:
-1 Suppresses the output column of lines unique to file1.
-2 Suppresses the output column of lines unique to file2.
-3 Suppresses the output column of lines duplicated in file1 and file2.
OPERANDS
The following operands are supported:
file1 A path name of the first file to be compared. If file1 is -, the standard input is used.
file2 A path name of the second file to be compared. If file2 is -, the standard input is used.
USAGE
See largefile(5) for the description of the behavior of comm when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 Printing a list of utilities specified by files
If file1, file2, and file3 each contain a sorted list of utilities, the command
example% comm -23 file1 file2 | comm -23 - file3
prints a list of utilities in file1 not specified by either of the other files. The entry:
example% comm -12 file1 file2 | comm -12 - file3
prints a list of utilities specified by all three files. And the entry:
example% comm -12 file2 file3 | comm -23 -file1
prints a list of utilities specified by both file2 and file3, but not specified in file1.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of comm: LANG, LC_ALL, LC_COLLATE,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 All input files were successfully output as specified.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
|CSI |enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
cmp(1), diff(1), sort(1), uniq(1), attributes(5), environ(5), largefile(5), standards(5)
SunOS 5.11 3 Mar 2004 comm(1)