How to set environment variable before running script inside hooks/install?

bash php juju

30,814

HOME isn't set in the Juju hooks, only a few environment variables are.

You should be able to just run

COMPOSER_HOME="/path/you/want/to/be/home" php composer.phar install

which will set the environment variable before executing php.

30,814

Updated on September 18, 2022

Amit almost 2 years
I am create a simple charm to get my symfony2 webapp from git and deploy it on ec2.

After getting the source from git, I want to run composer to resolve dependencies but I keep getting this error:
```
INFO juju context.go:221 worker/uniter: HOOK   The HOME or COMPOSER_HOME environment variable must be set for composer to run correctly
```
I am running composer using below command inside my hooks/install script
```
juju-log "Running composer"
/usr/bin/php composer.phar install
```
I also tried
```
juju-log "Running composer"
COMPOSER_HOME=${app_dir};/bin/bash -c "/usr/bin/php composer.phar install"
```
How can I set HOME or COMPOSER_HOME so that this command can be executed?
- Jorge Castro almost 11 years
  
  Please contact me (link in my profile page), I'd love to work with you on getting a symfony workflow in Ubuntu!
- Amit almost 11 years
  
  Sure @JorgeCastro, I will email you once my charm is complete.
Amit almost 11 years

Thanks Marco. That worked. I was trying similar but was giving ; before php, that should have also worked. COMPOSER_HOME=${app_dir} ; /usr/bin/php composer.phar install
Michael Gundlach almost 11 years

No, the ; won't make COMPOSER_HOME an environment variable, just a variable, You would need export COMPOSER_HOME=${app_dir}; the export makes it an environment variable. What I've done is just set it as an environment variable for just that command.