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Editorial Team
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Asked: 2026-06-06T08:38:40+00:00

I need to Load RVM into a shell session as a function , so

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I need to Load RVM into a shell session as a function , so I execute this script in my zshrc. 

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

However, this script will slow me down about 1 seconds whenever I launch a new terminal. So I figure out a solution which put this script to background job like this:

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" &

Then I got a quick launch time when I launch a new terminal. But I’ll see this message:

[1]  + done       source "$HOME/.rvm/scripts/rvm"
  1. Is there a better way to make this script don’t slow down my terminal launch time?
  2. how to suppress this “done” message when this background job done ?
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1 Answer

  1. Editorial Team

    This will not work for things like rvm. rvm relies on being able to manipulate your current shell’s environment (define its own shell functions etc). When you put a job in a background it is run in a sub-process that has no effect on the current shell. Example:

    [0 mbunkus@chai-latte ~] print $some_var

[0 mbunkus@chai-latte ~] cat the-file
some_var=some_value
[0 mbunkus@chai-latte ~] source the-file &
[1] 17090
[0 mbunkus@chai-latte ~]
[1]  + done       source the-file
[0 mbunkus@chai-latte ~] print $some_var

[0 mbunkus@chai-latte ~] source the-file
[0 mbunkus@chai-latte ~] print $some_var
some_value

    If rvm is too slow for you then you could also check out rbenv which does something similar to rvm but with much less shell magic.

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