Run cargo install --path . in the root of the git repo.
The binary will be installed to ~/.cargo/bin you may have to source ~/.cargo/env to use it.
It is recommended to copy the jargon447 file to the default path of /usr/local/share/jargon.
``` jargoncli [file path/to/jargon/file] [define wordtodefine] [index]
file: Jargon file location
define: Print a word's entry in the file
index: Output a list of entrys
```
You can download text versions of the file from http://www.catb.org/jargon/oldversions/.
The file seems to contain invalid UTF-8, which can be removed with iconv:
iconv -f utf8 -t utf8//IGNORE < jargonfile > jargonwithvalidunicode