CPAN and RRDs.pm of rrdtool

1. upgrade CPAN
cpan> install CPAN
cpan> reload cpan

2. install App::Cpan to use the `cpan -I` switch

3. then, local::lib can be compiled and installed!

4. #pkg_add p5-RRD

REFERENCE:

http://www.perlmonks.org/?node_id=637987
http://search.cpan.org/dist/local-lib/lib/local/lib.pm#The_bootstrapping_technique
http://my14all.sourceforge.net/install.html

batch adding users with perl

#!/usr/bin/perl
# The format is username:password:shell:homedir:groupname

open FILE, $ARGV[0] or die "Cannot open file: $!";

foreach $line (@lines=<FILE>){

chomp($line);
($name,$pass,$shel,$dirc,$grup)=split(/:/,$line);
chomp($epas=`encrypt $pass`);
system "useradd -s $shel -d $dirc -g $grup -p '$epas' $name";
#print $epas,"\n";

$pattern="^".$name."\$";
open CHROOTFILE, "/etc/ftpchroot" or die "Cannot open file: $!";
open APPENDFILE, ">>/etc/ftpchroot" or die "Cannot append file: $!";
if(!grep (/$pattern/,<CHROOTFILE>)) {print APPENDFILE "$name\n";}

}

using Perl and CPAN

OpenBSD ships with recent version of Perl. For example, 5.12 with OpenBSD 5.1.

Therefore, we can simple code in Perl with its powerful CPAN library if you lack of anything in your OpenBSD box!