SDFX Initial Setup

https://trailhead.salesforce.com/content/learn/projects/quick-start-salesforce-dx

Install from

https://developer.salesforce.com/tools/sfdxcli

Connect to Production (Dev Hub)

sfdx force:auth:web:login
--setdefaultdevhubusername
--setalias PRODUCTION

Open your ORG

sfdx force:org:open -u PRODCUTION

DX Command Structure

sfdx forsfdx topic:subtopic:subsubtopic
--parameter1 A --parameter2 B

examples
sfdx force:prg:open --targetusername PRODUCTION
sfdx force:org:open -a PRODUCTION

Help

sfdx force:org:open --help
sfdx force:data:sql:query --help

Upserting CSV records

sfdx force:data:bulk:upsert [...] ---csvfile newAccounts_A-F.csv

// name of csv file - newAccounts_A-F.csv