brew install coreutils

# File system hierarchy
tree ~
tree ~ | head

# convert json to csv via jq which is a lightweight and flexible command-line JSON processor.

# view json
cat test.json | jq '.'

# view json keys
cat test.json | jq 'keys'

# project key from all json
cat test.json | jq '.key'

# select a sample from dataset
cat titanic.csv | sample -r 0.2


# BigML’s prediction API
sudo pip install bigmler