Have a look at
sprintf for formatting numbers. The rest is just substitutions:
while ( <DATA> )
{
next unless m/id=345677/;
my ( $count ) = /(\d+)/;
( substr($_, 0, 5) = sprintf( "%5d", $count + 1 ) ) =~ s/ /-/g;
my ( $sec ,$min ,$hour ,$mday ,$mon ,$year ) = localtime;
my $date = sprintf "%02d.%02d.%4d", $mday, $mon, $year + 1900;
my $time = sprintf "%02d:%02d:%02d", $hour, $min, $sec;
s/\d\d\.\d\d\.\d\d\d\d/$date/;
s/\d\d:\d\d:\d\d/$time/;
print;
}
__DATA__
----0---m---28.07.2007---23:13:18---rest---id=123456
----9---a---28.07.2007---23:13:46---rest---id=345677
----0---a---28.07.2007---23:13:57---rest---id=876543
Output:
---10---a---29.07.2007---11:36:05---rest---id=345677
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