Assumed that the packageNumber was always eight characters and date was always ten characters in length. Hence the 8 and 10 in my command below.
Code:
> cat sample2
************************
* packageNumber : 1.0.0.14 *
* date : 2008.02.08 *
************************
> echo $str
1.0.0.15
> echo $timeStamp
2008.03.08
> cat sample2 | sed "s/date : .\{10\}/date : $timeStamp/" | sed "s/packageNumber : .\{8\}/packageNumber : $str/"
************************
* packageNumber : 1.0.0.15 *
* date : 2008.03.08 *
************************
