what actually happens when l do rbenv init - without shell parameter?

[laptopmutia]

so l want to use rbenv with cronjob

and it always fail to execute the task then l found this blogpost and want to learn the syntax

it said from the blog that l need to add path and do rbenv init like this

1 12 * * * export PATH="$HOME/.rbenv/bin:$PATH"; eval "$(rbenv init -)"; cd [location of app]; ruby [app].rb

is rbenv is optimal to do everytime my cron job is executed or there is another approach to this?

[mislav]

Hi, the eval ... rbenv init line is not meant for cronjobs or other noninteractive scripts. It's only meant to be loaded into an interactive shell.

If you just want automatic Ruby version switching, add ~/.rbenv/shims to PATH instead of ~/.rbenv/bin. Adding ~/.rbenv/bin to PATH is only useful if your script needs to call the rbenv command, which your cron job (and most other scripts) don't have to ever do. https://github.com/rbenv/rbenv#how-rbenv-hooks-into-your-shell

For example:

1 12 * * * export PATH="$HOME/.rbenv/shims:$PATH"; cd [location of app]; ruby [app].rb