- https://github.com/mtoyoda/sl
- https://ja.wikipedia.org/wiki/Sl_(UNIX)
- https://hub.docker.com/r/mamemomonga/sl
$ docker run -t --rm mamemomonga/sl
$ docker run -t --rm mamemomonga/sl -l
$ alias sl="docker run -t --rm mamemomonga/sl"
$ sl
$ sl -a
$ sl -l
$ sl -F
$ sl -c