CODEWITHSUNDEEP
linuxbashcircleci
Grant
Grant

Reputation: 859

How to write to $BASH_ENV with echo command using an existing environment variable?

I'm building an application with CircleCI and I'm looking to echo an environment variable to the $BASH_ENV so that it will persist between CircleCI steps.

A working example of this is:

echo 'export TEST_NAME=$( cat dockername.txt )' >> $BASH_ENV

Which will allow the TEST_NAME to be correctly loaded in the following CircleCI steps. I'm now looking to do the same but with the variable being equal to an existing environment variable.

export VAR=FOO
echo $VAR // outputs 'FOO'

echo 'export TOKEN=$VAR' >> $BASH_ENV 
// TOKEN outputs null in same and subsequent steps. I need it to equal FOO

I've tried every variation of syntax for this to work but I can't seem to crack it. Any thoughts?

Upvotes: 0

Views: 1356

Answers (1)

Calum Halpin
Calum Halpin

Reputation: 2105

echo "export TOKEN=${VAR}" >> $BASH_ENV

Use double quotes to have the variable evaluated. The braces aren't necessary but are good practice.

https://devhints.io/bash

Upvotes: 2

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