bashlib provides basic functions, when you used bash shell as script engine.
bashlib runs on bash ver3 pre-installed in Ubuntu, MacOS X, and so on.
It is not necessary to check previous stuation and not to check error after. ...
vbslib makes it easy to use VBScript on WSH. You can make programs easily.
Manual is here http://www.sage-p.com/vbslib/vbslib.files/vbslib.html (Internet Explorer, Japanese)