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Top Forums Shell Programming and Scripting How to grep nth word in line? Post 302873797 by chandu87 on Wednesday 13th of November 2013 07:11:09 AM
Old 11-13-2013
How to grep nth word in line?

my input file content is like this
Code:
GEFITINIB 403 14 -4.786873 -4.786873 -1.990111 0.000000 0.000000 -1.146266 -39.955912 483
VANDETANIB 404 21 -4.754243 -4.754243 -2.554131 -0.090303 0.000000 -0.244210 -41.615502 193
VANDETANIB 405 21 -4.737541 -4.737541 -2.670195 -0.006006 0.000000 -0.285579 -40.793145 472
PELITINIB 406 20 -4.697441 -4.697441 -1.154811 -0.323963 0.000000 -0.238975 -37.666605 934 
Neratinib 40 19 -4.680369 -4.680369 -1.618439 -0.196470 0.000000 -0.001702 -51.090346 405
1m17-co 408 1 -4.643390 -4.643390 -1.279303 -0.455054 0.000000 -0.899078 -39.117333 429
1m17-co 409 1 -4.634879 -4.634879 -1.465411 -0.430470 0.000000 -0.900950 -38.233987 405

my output should be line whose second word is 405
Code:
VANDETANIB 405 21 -4.737541 -4.737541 -2.670195 -0.006006 0.000000 -0.285579 -40.793145 472

If I use grep command
Code:
grep 405 file

it gives three lines
Code:
VANDETANIB 405 21 -4.737541 -4.737541 -2.670195 -0.006006 0.000000 -0.285579 -40.793145 472
Neratinib 40 19 -4.680369 -4.680369 -1.618439 -0.196470 0.000000 -0.001702 -51.090346 405
1m17-co 409 1 -4.634879 -4.634879 -1.465411 -0.430470 0.000000 -0.900950 -38.233987 405

but I want only the line whose second word is 405

Thanks in advance

Last edited by Franklin52; 11-13-2013 at 08:32 AM.. Reason: Please use code tags
 

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FBB::mlm(3bobcat)                                             OFoldStream manipulator                                            FBB::mlm(3bobcat)

NAME
FBB::mlm - Manipulator modifying left margins of OFoldStream objects SYNOPSIS
#include <bobcat/ofoldstream> or #include <bobcat/ofoldstreambuf> Linking option: -lbobcat DESCRIPTION
The mlm class implements a manipulator that can be inserted into OFoldStream objects to modify the stream's left margin by a requested amount. The request cannot result in a negative left margin value. If a negative left margin would be the arithmetic result of the request then left margin 0 will silently be used. Depending on the tab-setting of the OFoldStream the inserted value represents the number of blank space characters or the number of tab-characters that will be added to the left margin. The request will be processed at the next newline character or std::flush or std::endl manipulator that is inserted into the stream. If a line is still empty once an mlm object and a flush manipulator are inserted into the stream then the new left margin will be effective at the next word inserted into that line (cf., the example section below) A bad_cast exception is thrown when the manipulator is inserted into an ostream that is not using a OFoldStreambuf buffer. NAMESPACE
FBB All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB. INHERITS FROM
- CONSTRUCTOR
o mlm(int addValue): The standard copy constructor is available. MEMBER FUNCTIONS
There are no public or protected member functions in this class. EXAMPLE
#include <iostream> #include <bobcat/ofoldstream> using namespace std; using namespace FBB; int main() { OFoldStream out(cout, 0, 80); out << "hello world (left margin is 0)" << mlm(4) << " " "this uses a 4 character wide left margin " << mlm(-10) << flush << "left margin -6 changed to 0, active on this line "; return 0; } FILES
bobcat/mlm - defines the class interface SEE ALSO
bobcat(7), manipulators(3bobcat), lm(3bobcat), ofoldstream(3bobcat) BUGS
None Reported. DISTRIBUTION FILES
o bobcat_3.01.00-x.dsc: detached signature; o bobcat_3.01.00-x.tar.gz: source archive; o bobcat_3.01.00-x_i386.changes: change log; o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries; o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages; o http://sourceforge.net/projects/bobcat: public archive location; BOBCAT
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'. COPYRIGHT
This is free software, distributed under the terms of the GNU General Public License (GPL). AUTHOR
Frank B. Brokken (f.b.brokken@rug.nl). libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::mlm(3bobcat)
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