How to check your gem list on heroku

I know the command that works to do this, but I don't understand why. What is <code>\`...\`</code> doing in this context.

I know I can run:

heroku console
`gem list`

or

heroku console
`gem list`.split("\n")

to get a nice output, but I don't understand what these are doing. Why the ` `` `?

I've updated this in-case someone happens to come across `heroku console` as it's been disabled.

heroku run gem list



Show gems installed via :git

heroku run bundle show

For example

heroku run 'gem list'

Becouse

heroku console
is removed from heroku

In Ruby, you can run a system command either by using [`Kernel#exec`](

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) or by placing the contents in backticks. This is the same as typing `gem list` on the command line and getting the result back as a string.

`heroku console` is basically running an irb console on the remote computer, so you're in a ruby console when you do it. The backticks (`) are a standard way to run a system command in ruby.

The back ticks effectively making a system call and return the response that was written to stdout. Take a look at the [Kernel ruby docs][1] for more info.


[1]:

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