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If that's what I think you mean, it's already done.
That's the default; it can also display the full path or be turned off.
Not sure what you mean.
Do you mean like
Do you mean between each command?
Its just my guess. For example this loop
failed for some reason. Then I had to copy whole command, strip carrets, and put
before loop to fing what is wrong. Thinking about some option to print string with evaluated variables.. Maybe some king of built-in tee function. Only fuzzy ideas, I have no any solution..