Then you'll have a very educated idea of which Terminal operations are safe and which are not for you.
I prefer to place automatically executed operations in scripts, because auto-typing/pasting can be interfered with via keyboard, mouse, or another process.
This is not likely to occur when you're at the keyboard and performing a text-substitution or other pasted/typed command, but I've seen some strange things in the better part of two decades using Keyboard Maestro and 36 years using Mac automation tools.
I prefer Typinator to Keyboard Maestro for text-substitution, because I have thousands of snippets – and Typinator being dedicated software does the job more efficiently than Keyboard Maestro.
More than a few of those are prototypes for the Terminal.
There is synergy in having both apps – particularly since Keyboard Maestro can't do text-substitutions in its own dialogs.
(Typinator ⇢ Ergonis Software)
-Chris