s6-portable-utils
Software
skarnet.org
s6-tail prints a file or its stdin after a certain number of bytes or lines.
s6-tail [ -n lines | -c chars ] [ file ]
s6-tail acts as the generic tail utility, except that the -f option is not supported.
s6-tail is not suitable as a Single Unix tail program; however, if you are never using the -f functionality, s6-tail scrupulously follows the rest of the specification.