Making bash script continue after exec $SHELL

Question

I'm making a bash script that would install rbenv and ruby.

cd
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
exec $SHELL

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
exec $SHELL

rbenv install $rubyVersion
rbenv global $rubyVersion

But when the exec $SHELL is called the bash process is replaced by new bash process and the script stops (of course).

How can I make the script to continue?

...don't invoke exec $SHELL? What are you trying to accomplish by calling exec at that point? — Kenster
– Kenster, Commented Nov 26, 2018 at 20:19
exec doesn't mean "run this and wait for it to finish"; it means "run this and don't come back". — chepner
– chepner, Commented Nov 26, 2018 at 20:21
After installing rebenv it is not loaded until I call exec $SHELL — o..o
– o..o, Commented Nov 26, 2018 at 20:50

Eric Bolinger · Accepted Answer · 2018-11-26 20:56:33Z

2

It appears that you're trying to achieve multiple objectives by modifying the .bashrc file then calling exec $SHELL. Neither of those actions will modify the shell-in-which-this-script-is-running. To modify the current shell, you want to "source" the .bashrc file. Use the "dot notation" instead of calling exec $SHELL:

. ~/.bashrc

Good luck with this one!

answered Nov 26, 2018 at 20:56

Eric Bolinger

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2 Comments

o..o Over a year ago

Thanks! Well, I have tried source ~/.bashrc, but it is not working when I call it in the script. The script ends because rbenv is not found. But when it ends and I call it manually, after that the rbenv is found and ruby can be installed. Weird

o..o Over a year ago

#!/bin/bash -i helped! Thanks

Imre · Accepted Answer · 2018-11-26 20:28:11Z

0

replace exec $SHELL lines with "$SHELL" lines or completely remove those lines

answered Nov 26, 2018 at 20:28

Imre

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2 Comments

o..o Over a year ago

Not working. After installing rebenv it is not loaded until I call exec $SHELL

Paul Hodges Over a year ago

c.f. Eric's answer: . ~/.bashrc

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