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Full Discussion: Best Alternative to Search Text strings in directory
Top Forums Shell Programming and Scripting Best Alternative to Search Text strings in directory Post 302520579 by mirni on Sunday 8th of May 2011 07:10:57 AM
Old 05-08-2011
a) <file redirection is not too much more efficient than your for loop. It really just saves one process (cat). The best is to avoid shell loop and run the file through a filter, like awk.
And since you're not using find(1) to do anything super useful, it can be omitted as well. Something along these lines:
Code:
awk -v "dir=$someDir" -v "log=some.log" '{print "Searching for "$0 >> log; printf("grep -il \"%s\" * | sed \"s/^/%s, /\"\n", $0,$0); }' Customers.lst

This will print the commands to stdout. Look at it, take one, and execute it, and if everythinh seems well, pipe it to bash and capture the output to a file:
Code:
awk -v "dir=$someDir" -v "log=some.log" '{print "Searching for "$0  >> log; printf("grep -il \"%s\" * | sed \"s/^/%s, /\"\n", $0,$0);  }' Customers.lst | sh > output.log


b) if you omit double quotes and you're searching for a 2-word pattern, grep takes second word as the file to do search on:
Code:
$ cat file 
John Doe
John OtherDoe
$ grep John Doe file 
grep: Doe: No such file or directory
file:John Doe
file:John OtherDoe
$ grep "John Doe" file 
John Doe

Last edited by mirni; 05-08-2011 at 08:20 AM..
 

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LEARN ABOUT MOJAVE

net::dns::mailbox5.18

Net::DNS::Mailbox(3)					User Contributed Perl Documentation				      Net::DNS::Mailbox(3)

NAME

       Net::DNS::Mailbox - DNS mailbox representation

SYNOPSIS

	   use Net::DNS::Mailbox;

	   $mailbox = new Net::DNS::Mailbox('user@example.com');
	   $address = $mailbox->address;

DESCRIPTION

       The Net::DNS::Mailbox module implements a subclass of DNS domain name objects representing the DNS coded form of RFC822 mailbox address.

METHODS

   new
	   $mailbox = new Net::DNS::Mailbox('John.Doe@example.com');
	   $mailbox = new Net::DNS::Mailbox('John Doe <j.doe@example.com>');

       Creates a mailbox object which represents the DNS domain encoded form of the mail address specified by the character string argument.

       The argument string consists of printable characters from the 7-bit ASCII repertoire.

   address
	   $address = $mailbox->address;

       Returns a character string containing the RFC822 mailbox address corresponding to the encoded domain name representation described in
       RFC1035 section 8.

DOMAIN NAME COMPRESSION AND CANONICALISATION

       The Net::DNS::Mailbox1035 and Net::DNS::Mailbox2535 subclass packages implement RFC1035 domain name compression and RFC2535
       canonicalisation.

COPYRIGHT

       Copyright (c)2009,2012 Dick Franks.

       All rights reserved.

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

SEE ALSO

       perl, Net::DNS, Net::DNS::DomainName, RFC822, RFC1035, RFC5322

perl v5.18.2							    2014-01-16						      Net::DNS::Mailbox(3)
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