$ cat print.js
print('hi ppl')
console.log('asdf')

$ mongosh localhost print.js --shell
Current sessionID:  77e98a8d118b83505e25890f
Connecting to:      mongodb://127.0.0.1:27017/localhost
Using MongoDB:      4.2.2
Using Mongosh Beta: 0.0.8

For more information about mongosh, please see our docs: https://docs.mongodb.com/mongodb-shell/

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