This is a problem in Trusty too, if BUSYBOX=n in /etc/initramfs-tools/initramfs.conf. Neither grep nor egrep seems to be added, so the same error message appears.
This is a problem in Trusty too, if tools/initramfs .conf.
BUSYBOX=n
in /etc/initramfs-
Neither grep nor egrep seems to be added, so
the same error message appears.