Grep for empty file Post: 302358267

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Suppose i have the following data : cat file.txt 12431,123334,55353,546646,14342234,4646,35234 123123,3535,123434,132535,1234134,13535,123534 123213,545465,23434,45646,2342345,4656,31243 2355425,2134324,53425,342,35235,23434,234535 3423424,234234,65465,,2344,35436,234524,234...

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Hi, I'm writing a shell script and trying to grep a variable value, it works fine as long as there is a value in /tmp/list.out which is captured in $DSK but sometimes the file tends to be empty and that is where I'm having an issue while using grep which returns nothing. I know I can use something...

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Given a csv file with 40 columns with name, address, hometown etc. I use a bash command in 1 line which: 1. gets the address column and pipes that to 2. grep the first digit and everything that follows Command: awk -F ";" '{print $19}' /Users/jb/Desktop/ReorderTempTotal.csv | grep -o "\d.*"...

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LEARN ABOUT CENTOS

file::spec::functions

File::Spec::Functions(3)				User Contributed Perl Documentation				  File::Spec::Functions(3)

NAME

       File::Spec::Functions - portably perform operations on file names

SYNOPSIS

	       use File::Spec::Functions;
	       $x = catfile('a','b');

DESCRIPTION

       This module exports convenience functions for all of the class methods provided by File::Spec.

       For a reference of available functions, please consult File::Spec::Unix, which contains the entire set, and which is inherited by the
       modules for other platforms. For further information, please see File::Spec::Mac, File::Spec::OS2, File::Spec::Win32, or File::Spec::VMS.

   Exports
       The following functions are exported by default.

	       canonpath
	       catdir
	       catfile
	       curdir
	       rootdir
	       updir
	       no_upwards
	       file_name_is_absolute
	       path

       The following functions are exported only by request.

	       devnull
	       tmpdir
	       splitpath
	       splitdir
	       catpath
	       abs2rel
	       rel2abs
	       case_tolerant

       All the functions may be imported using the ":ALL" tag.

COPYRIGHT

       Copyright (c) 2004 by the Perl 5 Porters.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       File::Spec, File::Spec::Unix, File::Spec::Mac, File::Spec::OS2, File::Spec::Win32, File::Spec::VMS, ExtUtils::MakeMaker

perl v5.16.3							    2013-01-16						  File::Spec::Functions(3)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How will you list only the empty lines in a file (using grep)

Discussion started by: JosephGerard

2. UNIX for Dummies Questions & Answers

Trying to empty file using > but the file size increasing when next append

Discussion started by: firdousamir

3. UNIX for Dummies Questions & Answers

Getting same exit status for empty and non empty file

Discussion started by: mavesum

4. UNIX for Dummies Questions & Answers

Grep specific records from a file of records that are separated by an empty line

Discussion started by: Atrisa