#!/usr/bin/perl
use strict;
use warnings;

my $rsyncbin  = "/usr/bin/rsync";
my $backupdir = "/var/backups/server/incremental";
my @backdirs  = qw(/etc/ /root/ /var/www/ /home/); # dir on root of fs /
my @incdirs   = qw(etc root www home);         # dirs in /var/backups/server

$ENV{PATH} = "/usr/local/sbin:/usr/bin";

if (! defined($ARGV[0]) ) {
   &normal_run();
} elsif ($ARGV[0] eq '--first_run') {
   &first_run();
}

sub normal_run() {
}

sub first_run() {
   my $i = 0;
   foreach my $incdir (@incdirs) {
      system ("$rsyncbin -aHpE $backdirs[$i] $backupdir/$incdir/")
         or die "Can't run rsync $!";
      $i++;
   }
}