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Shell Programming and Scripting
awk remove/grab lines from file with pattern from other file
Post 302966259 by RudiC on Wednesday 10th of February 2016 08:23:57 AM
02-10-2016
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I want to search a file for a string and then if the string is found I need the line that the string is on - but also the previous two lines from the file (that the pattern will not be found in)
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hi,,
i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required.
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example:-
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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
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Copyright (c) 2006-2011 Mathieu Malaterre Version 2.2.0 Tue Feb 5 2013 gdcmdiff(1)