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Top Forums UNIX for Dummies Questions & Answers To compare two files,Output into a new file Post 302906693 by Ankita Talukdar on Monday 23rd of June 2014 04:50:32 AM
Old 06-23-2014
IBM To compare two files,Output into a new file

Hi

Please help me to compare two files and output into a new file
file1.txt
Code:
15114933    |4001
15291649    |933502
15764675    |4316
15764678    |4316
15761974    |282501
15673104    |933505
15673577    |933505
15673098    |933505
15673096    |933505
15673092    |933505
15760705    |4221
15760704    |4221
15764676    |4316

file2.txt
Code:
 4001|Y
 4221|Y
 282501|Y
 933502|N
 933505|N

Column 2 of file2.txt having value "N",I require to remove all occurances for column 1 of file2.txt from file1.txt

New file
Code:
15114933    |4001
15764675    |4316
15764678    |4316
15761974    |282501
15760705    |4221
15760704    |4221
15764676    |4316

Let me know if i amnot clear.

Thanks in advance

Ankita
 

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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 5.10 3 Mar 2004 comm(1)
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