tricksandtips.md

u-root Tricks and Tips

Here are some things we do that you might find useful.

Pipe u-root output to stdout

One thing to keep in mind is that on many systems, now, standard out is a named file you can write to. Further, you can create a cpio that has no Linux initramfs content. Finally, you can merge cpios to form a more comprehensive cpio.

inventory the cpio archive without creating it.

u-root -o /dev/stdout | cpio -ivt

Make a pure u-root cpio with no other files.

u-root -base /dev/null