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The real world benchmark is measuring it from invocation, both for cold launches and 'hot' (data cached from the last run).

Interestingly I might have only ever used the time (shell) builtin command. GNU's time measuring command prints a bunch of other performance stats as well.



I'm annoyed every time I have to write $(which time). But the stats given by -v are just so much more valuable from gnu-time.


Wouldn't it also work with "env time" if that's easier to type?


It would also work to just write 'time'

Quoting overrides aliases and builtins.

  $ 'time' -v -- echo hi
  hi
          Command being timed: "echo hi"
          [...]


The easiest to type is to make a 'time' alias (or shell function in fish, or whatever your shell prefers…)




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