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Top Forums Shell Programming and Scripting cut, sed, awk too slow to retrieve line - other options? Post 302484239 by jim mcnamara on Thursday 30th of December 2010 08:39:02 AM
Old 12-30-2010
awk supports associative arrays. Also, when you run tests, you should use a reasonable dataset, not just 100 lines. The reason is: what you get with the time command does not reflect your algorithm as much as it reflects creating a process, opening files, etc.

for keys common to file1 and file2 (try this on a big file)
Code:
awk -F'='  'FILENAME=="file1" { arr[$1]=$2; next }
               FILENAME=="file2" { if($1 in arr) {print $1, arr[$1], $2} } ' file1 file2 | sort

 

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ASP-PERL(1p)						User Contributed Perl Documentation					      ASP-PERL(1p)

NAME
asp-perl - Apache::ASP CGI and command line script processor SYNOPSIS
asp-perl [-hsdb] [-f asp.conf] [-o directory] file1 @arguments file2 @arguments ... -h Help you are getting now! -f Specify an alternate configuration file other than ./asp.conf -s Setup $Session and $Application state for script. -d Set to debug code upon errors. -b Only return body of document, no headers. -o Output directory, writes to files there instead of STDOUT -p GlobalPackage config, what perl package are the scripts compiled in. DESCRIPTION
This program will run Apache::ASP scripts from the command line. Each file that is specified will be run, and the $Request->QueryString() and $Request->Form() data will be initialized by the @arguments following the script file name. The @arguments will be written as space separated words, and will be initialized as an associate array where %arguments = @arguments. As an example: asp-perl file.asp key1 value1 key2 value2 would be similar to calling the file.asp in a web environment like /file.asp?key1=value1&key2=value2 The asp.conf script will be read from the current directory for parameters that would be set with PerlSetVar normally under mod_perl. For more information on how to configure the asp.conf file, please see < http://www.apache-asp.org/cgi.html > SEE ALSO
perldoc Apache::ASP, and also http://www.apache-asp.org COPYRIGHT
Copyright 1998-2004 Joshua Chamas, Chamas Enterprises Inc. This program is distributed under the GPL. Please see the LICENSE file in the Apache::ASP distribution for more information. perl v5.14.2 2011-08-15 ASP-PERL(1p)
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