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iPXE maintains a concept of a current working URI, which is used when
resolving relative URIs and allows scripts to download files using
URIs relative to the script itself.
There are situations in which it is valuable for a script to be able
to access the URI explicitly as a string, not just implicitly as a
base URI for subsequent downloads. For example, when booting a Fedora
installer, the "inst.repo" command-line parameter may be used to pass
the URI of the repository to the installer.
Expose the current working URI as ${cwuri}. Since relative URIs may
be constructed as strings only from a directory URI (not from a full
URI), also expose the current working directory URI as ${cwduri}.
This feature may be used as e.g.
#!ipxe
echo Booting from ${cwuri}
prompt -k 0x197e -t 2000 Press F12 to install Fedora... || exit
kernel images/pxeboot/vmlinux inst.repo=${cwduri}
initrd images/pxeboot/initrd.img
boot
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE README File Quick start guide: cd src make For any more detailed instructions, see http://ipxe.org