https://www.musl-libc.org/releases/musl-1.1.19.tar.gz
http://www.mirbsd.org/MirOS/dist/mir/mksh/mksh-R56c.tgz
http://www.cs.princeton.edu/~bwk/btl.mirror/awk.tar.gz
http://busybox.net/downloads/busybox-1.28.3.tar.bz2
https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.16.2.tar.xz
http://mama.indstate.edu/users/ice/tree/src/tree-1.7.0.tgz
http://prdownloads.sourceforge.net/ircd-hybrid/ircd-hybrid-8.2.24.tgz