Custom terminal command: repeat a command a number of times

Why would you need such a thing?

Well in my case there are tests that fails about 5-10% of the time and I wanted to be able to run those tests a bunch of times to see if my fix changed the failure rate to 0 or at least statistically lower.

Another thing to glean from this is the use of $@, which is equivalent to "all the arguments to the command except the command itself ($0 AKA tentimes/hundredtimes) in this case. This is so it can execute in this example mix test test/web/views/shared_view_test.exs, which when split on strings in this context are also $1, $2, $3

#!/usr/bin/env zsh

function tentimes() {
  for i in {1..10}; do "$@"; done
}

function hundredtimes() {
  for i in {1..100}; do "$@"; done
}

Or add the above functions to .bashrc or .zshrc

So you can just run:

tentimes mix test test/web/views/shared_view_test.exs

or

hundredtimes mix test test/web/views/shared_view_test.exs