This is a respectful adaptation (shameless rip) of
Steve Baker's original tree
program. I have added autotoolery
(autoconf and automake) to Mr. Baker's original work---this should spare users
the trouble of editing the Makefile.
$ git clone https://github.com/rubicks/tree.git && \
cd tree && \
autoreconf -ivf . && \
./configure && \
make install
$ tar vxzf tree-1.7.0.tar.gz && \
cd tree-1.7.0 && \
./configure && \
make install