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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 SUSE

cmp

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.  Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.

AUTHOR

       Written by Torbjorn Granlund and David MacKenzie.

REPORTING BUGS

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

COPYRIGHT

       Copyright (C) 2007 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

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.

diffutils 2.8.7-cvs						   January 2008 							    CMP(1)
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