Chronicle::Shell

# install chronicle-etl and then this plugin
gem install chronicle-etl
chronicle-etl plugins:install shell

# output commands since 2 weeks ago
$ chronicle-etl --extractor shell:command --schema chronicle --since 2w --loader json

# Show recent commands sorted by frequency of use
$ chronicle-etl --extractor shell:command --loader table --limit 500 --fields command --silent | sort | uniq -c | sort -nr