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Top Forums Shell Programming and Scripting Compare two files and find match and print the header of the second file Post 302903970 by redse171 on Saturday 31st of May 2014 11:32:12 AM
Old 05-31-2014
Compare two files and find match and print the header of the second file

Hi,

I have two input files; file1 and file2. I compare them based on matched values in 1 column and print selected columns of the second file (file2). I got the result but the header was not printed. i want the header of file2 to be printed together with the result. Then i did below codes:-

Code:
awk -F "\t" 'FNR==NR{F2[$1]; next}FNR==1{print} ($1 in F2) {print $1 "\t" $6 "\t" $7 "\t" $10 "\t" $12 "\t" $13 "\t" $24}' file1 file2 > matched_output

but it gives me the headers for all columns, whereas i just want the header for the selected columns only. Any help is so appreciated. Thanks
 

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gdcmdiff(1)							       GDCM							       gdcmdiff(1)

NAME
gdcmdiff - .SH "SYNOPSIS" gdcmdiff [options] file1 file2 DESCRIPTION
The gdcmdiff command line program takes as input two DICOM file: file1 and file2. PARAMETERS
file1 DICOM input filename file2 DICOM output filename options options -m --meta Compare metainformation. Default is off. -t <n> --truncate <n> String values trimmed to n characters. general options -h --help print this help text and exit -v --version print version information and exit -V --verbose verbose mode (warning+error). -W --warning warning mode, print warning information -E --error error mode, print error information -D --debug debug mode, print debug information Simple usage gdcmdiff is a great tool to diff DICOM files. Usage is simply: $ gdcmdiff input1.dcm input2.dcm SEE ALSO
gdcmdump(1), gdcminfo(1) COPYRIGHT
Copyright (c) 2006-2011 Mathieu Malaterre Version 2.2.0 Tue Feb 5 2013 gdcmdiff(1)
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