It occurred to me that Huub wrote in gmane.os.netbsd.general:
> Ok. Here's my script (already added the '='):

Too bad you added it at the wrong place!

> #!/usr/pkg/bin/bash
> export=CVSROOT :pserver:anoncvs@anoncvs.be.NetBSD.org:/cvsroot

export CVSROOT=anoncvs@anoncvs.be.NetBSD.org:/cvsroot

> cd /usr
> cvs checkout -P pkgsrc