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Full Discussion: Compare two files when pattern matched
Top Forums UNIX for Beginners Questions & Answers Compare two files when pattern matched Post 302979823 by RudiC on Friday 19th of August 2016 08:51:29 AM
Old 08-19-2016
Code:
awk '
NR == FNR       {T[$1]                                  # for the first file (NR id. to FNR), collect the names to search in T array
                 next                                   # stop processing this line; read next one
                }
                {FN = $0                                # second file only: save total file path in FN variable
                 gsub (/^.*\/|.txt$/, _)                # remove leading path info and ".txt" ext. from file name
                }
$0 in T         {system ("echo cp " FN " /some/where")  # IF the reduced file name is found in pattern array T, run the 
                                                        # system command to cp FN (full file path) to destination (echo inserted for safety)
                }
' file2 file1

This User Gave Thanks to RudiC For This Post:
imranrasheedamu
 

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LEARN ABOUT OPENSOLARIS

gcmp

CMP(1)								   User Commands							    CMP(1)

NAME

       cmp - compare two files byte by byte

SYNOPSIS

       cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]]

DESCRIPTION

       Compare two files byte by byte.

       -b  --print-bytes
	      Print differing bytes.

       -i SKIP	--ignore-initial=SKIP
	      Skip the first SKIP bytes of input.

       -i SKIP1:SKIP2  --ignore-initial=SKIP1:SKIP2

	      Skip the first SKIP1 bytes of FILE1 and the first SKIP2 bytes of FILE2.

       -l  --verbose
	      Output byte numbers and values of all differing bytes.

       -n LIMIT  --bytes=LIMIT
	      Compare at most LIMIT bytes.

       -s  --quiet  --silent
	      Output nothing; yield exit status only.

       -v  --version
	      Output version info.

       --help Output this help.

       SKIP1  and  SKIP2  are  the number of bytes to skip in each file.  SKIP values may be followed by the following multiplicative suffixes: kB
       1000, K 1024, MB 1,000,000, M 1,048,576, GB 1,000,000,000, G 1,073,741,824, and so on for T, P, E, Z, Y.

       If a FILE is `-' or missing, read standard input.

AUTHOR

       Written by Torbjorn Granlund and David MacKenzie.

REPORTING BUGS

       Report bugs to <bug-gnu-utils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.

       This program comes with NO WARRANTY, to the extent permitted by law.  You may redistribute copies of this program under the  terms  of  the
       GNU General Public License.  For more information about these matters, see the file named COPYING.

SEE ALSO

       The  full  documentation  for cmp is maintained as a Texinfo manual.  If the info and cmp programs are properly installed at your site, the
       command

	      info diff

       should give you access to the complete manual.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-------------------+
       |  ATTRIBUTE TYPE    |  ATTRIBUTE VALUE	|
       +--------------------+-------------------+
       |Availability	    | SUNWgnu-diffutils |
       +--------------------+-------------------+
       |Interface Stability | Uncommitted	|
       +--------------------+-------------------+
NOTES

       Source for GNU diffutils is available on http://opensolaris.org.

diffutils 2.8.1 						    April 2002								    CMP(1)
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