polystrap/minimal/hooks/firstboot

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cat > $ROOTDIR/etc/init.d/firstboot << __END__
#!/bin/sh -e
### BEGIN INIT INFO
# Provides: firstboot
# Required-Start: \$all
# Required-Stop:
# Default-Start: S
# Default-Stop:
### END INIT INFO
update-rc.d -f firstboot remove
for f in rsa dsa ecdsa; do rm -rf /etc/ssh/ssh_host_\${f}_key; done
echo "generating ssh rsa key..."
ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -C "" -N ""
echo "generating ssh dsa key..."
ssh-keygen -q -t dsa -f /etc/ssh/ssh_host_dsa_key -C "" -N ""
echo "generating ssh ecdsa key..."
ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -C "" -N ""
__END__
chmod +x $ROOTDIR/etc/init.d/firstboot
fakechroot chroot $ROOTDIR update-rc.d firstboot start 99 S