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Full Discussion: lookup in unix
Top Forums UNIX for Dummies Questions & Answers lookup in unix Post 302220131 by Annihilannic on Thursday 31st of July 2008 02:03:34 AM
Old 07-31-2008
Code:
awk -F, -v OFS=, '
    # load array with changed client numbers
    NR==FNR { client_num[$1]=$2; next }
    # if this client has changed, print updated record
    $1 in client_num { print $1,client_num[$1]; next }
    # otherwise just print the current record
    1
' file_with_changes originalfile > newfile

Last edited by Annihilannic; 07-31-2008 at 03:04 AM.. Reason: forgot OFS
 

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LEARN ABOUT V7

socketmap_table

SOCKETMAP_TABLE(5)						File Formats Manual						SOCKETMAP_TABLE(5)

NAME

       socketmap_table - Postfix socketmap table lookup client

SYNOPSIS

       postmap -q "string" socketmap:inet:host:port:name
       postmap -q "string" socketmap:unix:pathname:name

       postmap -q - socketmap:inet:host:port:name <inputfile
       postmap -q - socketmap:unix:pathname:name <inputfile

DESCRIPTION

       The Postfix mail system uses optional tables for address rewriting. mail routing or policy lookup.

       The  Postfix  socketmap	client expects TCP endpoint names of the form inet:host:port:name, or UNIX-domain endpoints of the form unix:path-
       name:name.  In both cases, name specifies the name field in a socketmap client request (see "REQUEST FORMAT" below).

PROTOCOL

       Socketmaps use a simple protocol: the client sends one request, and the server sends one reply.	Each request and each reply  are  sent	as
       one netstring object.

REQUEST FORMAT

       The socketmap protocol supports only the lookup request.  The request has the following form:

       name <space> key
	      Search the named socketmap for the specified key.

       Postfix	will  not  generate partial search keys such as domain names without one or more subdomains, network addresses without one or more
       least-significant octets, or email addresses without the localpart, address extension or domain portion. This behavior is also  found  with
       cidr:, pcre:, and regexp: tables.

REPLY FORMAT

       The  Postfix  socketmap	client	requires  that	replies are not longer than 100000 characters (not including the netstring encapsulation).
       Replies must have the following form:

       OK <space> data
	      The requested data was found.

       NOTFOUND <space>
	      The requested data was not found.

       TEMP <space> reason

       TIMEOUT <space> reason

       PERM <space> reason
	      The request failed. The reason, if non-empty, is descriptive text.

SECURITY

       This map cannot be used for security-sensitive information,
       because neither the connection nor the server are authenticated.

SEE ALSO

       http://cr.yp.to/proto/netstrings.txt, netstring definition
       postconf(1), Postfix supported lookup tables
       postmap(1), Postfix lookup table manager
       regexp_table(5), format of regular expression tables
       pcre_table(5), format of PCRE tables
       cidr_table(5), format of CIDR tables

README FILES

       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       DATABASE_README, Postfix lookup table overview

BUGS

       The protocol limits are not yet configurable.

LICENSE

       The Secure Mailer license must be distributed with this software.

HISTORY

       Socketmap support was introduced with Postfix version 2.10.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA

																SOCKETMAP_TABLE(5)
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