Showing results for 
Search instead for 
Did you mean: 
Sign up Log in
It's not the same without you

Join the community to find out what other Atlassian users are discussing, debating and creating.

Atlassian Community Hero Image Collage

Why do i need an eval around a subshell script?

I'm using the ECR credentials task, and have written a small script to push a docker image to ecr.  for some reason, the below command is not successful unless i wrap it in an eval.

$(aws ecr get-login --no-include-email).

eval $(aws ecr get-login --no-include-email)  --- works

The examples i read for ecr did not include this.  I'm ok with it if that's how it has to work, just not entirely clear why.

1 answer

1 accepted

0 votes
Answer accepted

Hi Jason, welcome to the community!

I'm not exactly a shell expert myself, so please allow me to postpone looking into your actual question in favor of an upfront clarification:

When you say you are 'using the ECR credentials task', do you in fact mean our Amazon ECR Credentials Variables task, or just a regular Bamboo Script task to get the credentials solely via the AWS CLI as outlined in your question?


In this case, i'm getting the credentials myself.  I am using the credentials task in other scenarios, just not this one.

If you were in a shell, and just typed what i had without eval, it would work.  It's not a big deal, just trying to understand why.

Like Steffen Opel _Utoolity_ likes this

Suggest an answer

Log in or Sign up to answer
Community showcase
Published in Bamboo

Bamboo Data Center 8.1 is now available

G’day Bamboo customers, Bamboo DC 8.1 is now available with it the following features and programs: SAML 2.0, OpenID Connect, and Crowd SSO In order to help admins with a simplified user manage...

217 views 0 4
Read article

Community Events

Connect with like-minded Atlassian users at free events near you!

Find an event

Connect with like-minded Atlassian users at free events near you!

Unfortunately there are no Community Events near you at the moment.

Host an event

You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events

Events near you