Trying to run a command when a file matching a regex does not exist.

[Michael Kelly]

Hi,

I'm trying to run a command when a file matching a regex does not exist.

My use case is 

I am unzipping an artifact - ec2-api-tools.zip

This will unzip to a directory that includes the version number - e.g. ec2-api-tools-1.6.13.0

I want to check if there is a directory that matches the regex 'ec2-api-tools-*' and only run the unzip command if it doesn't exist.

I don't want to tie the script to a particular version as it will change over time.

This is the approach I took -

- name: download ec2 command line tools

  command: chdir=~/tools wget http://s3.amazonaws.com/ec2-downloads/ec2-api-tools.zip creates=ec2-api-tools.zip

- name: Register if ec2 directory exists

  command: chdir=~/tools test -d ec2-api-tools-*

  ignore_errors: True

  register: ec2_tools_installed

- name: unzip ec2-tools

  command: chdir=~/tools unzip ec2-api-tools.zip

  when: ec2_tools_installed.rc == 1

The problem is the 'test -d ec2-api-tools-*' always fails. The command passes fine if I run it from the machine itself. The script will work if I change the ec2-api-tools-* to match the exact version number.

So what I'm wondering is  -

Why does the * in the  'test -d ec2-api-tools-*' command not work correctly? 

Is there a better way of accomplishing this that I'm just not seeing? I imagine it's a common enough use case.

Thanks in advance,

Michael

[Michael DeHaan]

Change "command:" to "shell:" if you want to use shell features like wildcards, and this should work fine.

Thanks!

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