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Full Discussion: Remove lines in a positional file based on string value
Top Forums UNIX for Dummies Questions & Answers Remove lines in a positional file based on string value Post 302801597 by Yoda on Thursday 2nd of May 2013 09:54:28 AM
Old 05-02-2013
No need for a while loop to read line by line. You can achieve this by using below awk code:
Code:
awk 'substr($0,11,1)=="Y"' input > output

This User Gave Thanks to Yoda For This Post:
gsam
 

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LEARN ABOUT DEBIAN

socket_getnameinfo

SOCKET_GETNAMEINFO(1p)					User Contributed Perl Documentation				    SOCKET_GETNAMEINFO(1p)

NAME

       "socket_getnameinfo" - command-line tool to "getnameinfo(3)" resolver

SYNOPSIS

       socket_getnameinfo [options...] address port

DESCRIPTION

       This tool provides a convenient command-line wrapper around the getnameinfo(3) resolver function. It will perform a single reverse lookup
       to convert an address and port number into its host and service names. This is mainly useful when debugging names resolution problems,
       because it allows inspection of the getnameinfo(3) behaviour itself, outside of any real program that is trying to use it.

OPTIONS

       --address, -A ADDR
	       Numerical form of address to look up. If not supplied, will use the first positional argument.

       --port, -P PORT
	       Port number to look up. If not supplied, will use the second positional argument.

       --dgram Sets the "NI_DGRAM" flag; looks up a "SOCK_DGRAM" (udp) port allocation rather than "SOCK_STREAM" (tcp).

       --help  Display a help summary and exit

NOTE

       Upstream this script is known as "getnameinfo", but was renamed on Debian.

AUTHOR

       Paul Evans <leonerd@leonerd.org.uk>

perl v5.14.2							    2012-06-08						    SOCKET_GETNAMEINFO(1p)
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