cjfields@pyrimidine:~/tests/eutils$ cat efetch.pl 
#!/usr/bin/perl 

use strict;
use warnings;
use Bio::DB::EUtilities;
 
my @ids = qw(4826782 157749793);
 
my $factory = Bio::DB::EUtilities->new(-eutil => 'epost',
                                       -email => 'pat.boutet@gmail.com',
                                       -db => 'protein',
                                       -id => \@ids,
                                       -keep_histories => 1);
 


my $count = scalar(@ids);

print $count."\n";;

# get history from queue
my $hist = $factory->next_History || die 'No history data returned';
print "History returned\n";
$factory->set_parameters(-eutil => 'esummary',
                         -history => $hist);

$factory->print_all;
cjfields@pyrimidine:~/tests/eutils$ perl efetch.pl
2
History returned
EUtil               :esummary


DB                  :protein

UID                 :4826782
Caption             :NP_004965
Title               :potassium voltage-gated channel subfamily A member 2 [Homo sapiens]
Extra               :gi|4826782|ref|NP_004965.1|[4826782]
Gi                  :4826782
CreateDate          :1999/05/14
UpdateDate          :2010/03/04
Flags               :512
TaxId               :9606
Length              :499
Status              :live
ReplacedBy          
Comment             

UID                 :157749793
Caption             :XP_001678610
Title               :Hypothetical protein CBG00686 [Caenorhabditis briggsae AF16]
Extra               :gi|157749793|ref|XP_001678610.1|[157749793]
Gi                  :157749793
CreateDate          :2007/09/30
UpdateDate          :2008/04/03
Flags               :512
TaxId               :473542
Length              :775
Status              :suppressed
ReplacedBy          
Comment             : This whole-genome-shotgun scaffold was removed because it has been
		    :superceded by a new assembly of the genome.