[syslinux] special meaning of '--' in pxelinux.cfg

H. Peter Anvin hpa at zytor.com
Wed Dec 23 09:30:31 PST 2009

On 12/23/2009 07:01 AM, Jodok Ole Muellers wrote:
> Hello,
> I often see the double dash -- in the append line in isolinux/syslinux configurations
> I only know this as "disable further option processing" e.g. in bash.
> What is the function of the -- ? 
> I don't see any difference if I use it don't use it.
> E.g here :
> append  vga=normal initrd=/install.amd/initrd.gz -- quiet 
> append vga=normal initrd=debian-installer/amd64/initrd.gz -- console=ttyS0,9600n8 quiet

No idea.  The kernel certainly doesn't care, and neither does the boot
loader.  It's possible that the Debian initrd does something special
with it.

I'm wondering, though, if it isn't just someone being confused.


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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