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Yesterday, I zipped up something using 7-zip on the PC, using a password for the zip file. So if I copy the file to another PC and unzip, it asks for the password and restore the file. However, if I copy the file to a Mac with Snow Leopard and double click on that file, it will simply say, can't unzip the file. (Archive Utility was the app).

For me, since I know UNIX, I tried to open up Terminal and typed in


and it actually asked for the password and unzipped for me, but I just wonder, what about if I don't use Terminal, or for people who are not familiar with the command line, how can it be done?

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up vote 8 down vote accepted

I don't think the built-in decompression utility can unzip password protected files. However, The Unarchiver is the way to go for all things compression related on OS X anyway.

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the DOES NOT support password protected files. – Kassym Dorsel Oct 16 '11 at 22:30
@KassymDorsel: You're referring to the default one that ships with the OS, not the unarchiver, correct? – Robert S Ciaccio Oct 16 '11 at 23:04
That is correct. TheUnarchiver is the best free alternative to the built in Archive app. – Kassym Dorsel Oct 16 '11 at 23:28
Can you use it to view the contents of a compressed archive? – l'L'l Oct 17 '11 at 7:25
You can use a free QuickLook plugin : Otherwise you will have to get a shareware app – Kassym Dorsel Oct 17 '11 at 14:02

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