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Full Discussion: file comparison script
Top Forums Shell Programming and Scripting file comparison script Post 302162753 by tiger99 on Wednesday 30th of January 2008 01:41:27 AM
Old 01-30-2008
file comparison script

Hi
I need to write a script that can check files in a folder one by one and compare against a fixed file.

i.e.
I have some files in folder_a
file1.txt
file2.txt
file3.txt
and a fixed file in folder_b
fixed.txt

Inside the fixed.txt, I have
line1.sql
line2.sql
line3.sql

Inside the file1.txt, I have
line1.sql
Inside the file2.txt, I have
line2.sql
Inside the file3.txt, I have
line3.sql

I was wondering, how can I write a script that would check file1.txt to file3.txt and make sure that fixed.txt has everthing in those three files?

I start by searching the files in folder_a like the following...then I am not sure what to do next Smilie


Code:
find ~/Documents/folder_a -name 'file*.txt'

Could someone please give me some guidence/help on how to go about solving this
 

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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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