Determine if a directory is a bundle or package in the Mac OS X terminal?

Question

I'd like to be able to determine if a directory such as a '.app' is considered to be a package or bundle from Finder's point of view on the command line. I don't think this would be difficult to do with a small shell program, but I'd rather not re-invent the wheel if I don't have to. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

This is a bit late, but: it seems you can detect bundles using the mdls command. Specifically, the (multi-line) output of: mdls -name kMDItemContentTypeTree /Path/To/Directory Will contain the string "com.apple.package" (including the quotation marks, at least as of Lion) somewhere if the directory is a package. If the package is also a bundle, the output will also contain "com.apple.bundle" and, last but not least, if it is specifically an application bundle, the output will also contain "com.apple.application-bundle" (That's according to some very limited testing, but from what Apple's documentation on Uniform Type Identifiers, and the man page for mdls, this should hold true. And for the items I tested, this was true for non-Apple-provided bundles as well, which is what you would expect given the purpose of UTIs.)