# ***********************************************

# this function convert a unix timestamp to

# string date like 1170882000 => YYYY-MM-DD HH:MM:SS

function time2date () {

local time=$1

local tzone=$2

[ -z "$tzone" ] && tzone=0

perl -e '

my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime( '$time'+( '$tzone'*3600 ) );

$mon  = $mon+1;

$sec  = sprintf( "%.2d", $sec  );

$min  = sprintf( "%.2d", $min  );

$hour = sprintf( "%.2d", $hour );

$mon  = sprintf( "%.2d", $mon  );

$mday = sprintf( "%.2d", $mday );

$year = 1900+$year;

print $year."-".$mon."-".$mday." ".$hour.":".$min.":".$sec;

'

}