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PHP shell scripts stop working if PHP executable is symlinked

March 9, 2012

I do web development for PHP on a MAC. Recently I installed the Acquia Dev desktop which is quite handy. It installed its own version of PHP to /Applications/acquia-drupal/php/bin/php

I needed to use this PHP from the command line so put a symnlink from /usr/bin/php -> /Applications/acquia-drupal/php/bin/php

Now, I also had phpcs installed, but moving PHP from an executable to a symmlink really upset it and it stopped working. Indeed, no shell script with the following shebang starting line would work anymore.

#!/usr/bin/php

The solution is to instead use the following line at the top of those shell scripts instead:

#!/usr/bin/env php

So to make phpcs work again I had to edit /usr/bin/phpcs

Ref:
http://www.cyberciti.biz/tips/finding-bash-perl-python-portably-using-env.html

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