lilo -R equivalent in grub?

[Warren Togami <warren togami com>]

I just learned about the awesome "lilo -R" command.  The man page says:

-R command line
This option sets the default command for  the  boot  loader  the next 
time  it  executes.  The  boot loader will then erase this line: this is 
a once-only  command.  It  is  typically  used  in reboot scripts, just 
before calling ‘shutdown -r’.


This allows you to test new kernels on remote servers, and it will 
revert back to the lilo.conf default during the next boot.  A regular 
reboot, remote power cycle, or passing 'panic=10' kernel option which 
reboots upon panic would fallback to the previous default.

Does GRUB have anything similar to lilo's -R?  This is a totally useful 
function and I would really like to avoid using lilo.

If this functionality is truly missing from GRUB then this is another 
project for me.

Warren