Need to open a password protected zip on Mac OSX?

Recently we were sent a password protected zip file at work. If you have ever tried to double click open a protected zip file you know that you will get an error not a password prompt.

If we ignore third party applications to open these files we are left with running the unzip command from terminal. You can use the option “-P password” where you replace the word password with actual password used to protect the file. An example command might look like:

This may have been good enough for me. But we have less technically inclined folks in our group who needed access to the provided files. So I made an Automator that everyone in the group could reuse for even future files. The Automator needed several features.

  1. Provide a GUI browser selection box to choose the protected zip file.
  2. Prompt for the password needed to unzip the file.
  3. Send the content to the user’s desktop regardless of whom ran it.

Here is how we build the Automator. The key components are the use of variables within Automator and a shell script object that takes the file and password as arguments that were provided by the user.

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