How to Use Via Terminal
The command-line philosophy might come down to the typing of commands with 10 digits as opposed to using just the index finger to click.
Go back to the bash shell references and consider the behavior of the command line.
Find the BeOS thinking. Find the article by Neil Stephenson.
Consider that command-line commands might be a lot like the REST URL design.
Consider also how SQL is universal across database management systems and what a boon that is for a developer.