pivot_root mount_root reboot sync kill sleep \
md5sum hexdump cat zcat dd tar gzip \
ls basename find cp mv rm mkdir rmdir mknod touch chmod \
- '[' printf wc grep awk sed cut sort \
+ '[' printf wc grep awk sed cut sort tail \
mtd partx losetup mkfs.ext4 nandwrite flash_erase \
ubiupdatevol ubiattach ubiblock ubiformat \
ubidetach ubirsvol ubirmvol ubimkvol \