Re: kenv enhancement

> On Tuesday 04 May 2004 02:11 am, Danny Braniss wrote:
> > > On Saturday 01 May 2004 08:22 am, Danny Braniss wrote:
> > > > Hi,
> > > > 	I propose to bring back some lost options to kenv, -c and -s
> > > > ie,
> > > > 	kenv -c class [-s]
> > > > so that
> > > > 	kenv -h is equivalent to kenv -c hint.
> > > > and
> > > > 	kenv -c boot.nfsroot. -s
> > > > gives:
> > > > nfshandle="X9ca48b3f5b77454e0c00000002000000bfa306310000000000000000000
> > > >0000 0X" path="/d/6"
> > > > server="132.65.16.100"
> > > >
> > > > the 'enhanced' kenv is in
> > > > 	ftp://ftp.cs.huji.ac.il/users/danny/freebsd/kenv/
> > > >
> > > > danny
> > >
> > > I rototilled this a bit to make it use the existing style.  I also
> > > renamed 'class' to prefix since you can do things like 'kenv -p kern -s'
> > > to get interesting output like:
> > >
> > > el="kernel"
> > > el_options=""
> > > elname="/boot/kernel/kernel"
> > >
> > > :-P
> > >
> > > One thing to note is that 'kenv -p foo' is basically the same as
> > > 'kenv | grep ^foo', and that 'kenv -p foo -s' is basically the same as
> > > 'kenv | sed -ne '/^foo/{s///;p;}'.  Generally new options aren't added to
> > > programs if they can be easily duplicated via a simple pipeline.  Is
> > > there a reason that you need kenv to do this explicitly rather than using
> > > sed or grep?
> >
> > We use it very early in the boot process - rc.d/initdiskless, and
> > /usr might not be mounted - not true in my particular case though.
> > BTW, the flags I used are the same that once were in kenv and somewhere
> > down the road were removed.
> 
> Do you know when they were in kenv?  Those flags don't appear in any of the 
> versions in CVS and, it is actually a fairly recent program:
> 
> ----------------------------
> revision 1.1
> date: 2000/07/08 08:33:40;  author: peter;  state: Exp;
> branches:  1.1.2;
> Initial kenv(1) hack for dumping the kernel environment.  This can be
> used to extract modified boot hints to make loader(8)-time changes
> "sticky".  It tries to use \ style quoting so that it can be used directly
> with foo.conf files.  It can also extract specific variables.
> ----------------------------
> 

sorry, all i remember is that it was short lived.
	danny