Mac OS hdiutil

Hdiutil from manpage: hdiutil — manipulate disk images (attach, verify, burn, etc).

Native Apple command line utility for working with disk images (*.DMG). It uses the DiskImages framework. Disk images (usually with a .dmg, .img, or .iso file name extension) are often used for distributing programs and for burning CDs/DVDs, I use it to share my Data wirh friends, lets look how it works:

You have a folder that you will share with your friends, of course you can create a archive like zip, but this is a kind of alternative method:

Creating a disk image from a folder:

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create Dropbox.dmg -srcfolder Dropbox -volname "IDs Dropbox Image"

Mount Image manualy (or click on it from Finder))):

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hdiutil mount Dropbox.dmg

Umount Image:

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hdiutil unmount /Volumes/IDs\ Dropbox\ Image/

Burn images to CD/DVD with hdiutil (before you go on insert a blank CD/DVD):

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hdiutil burn debian-6.0.4-amd64-i386-netinst.iso

Create an encrypted disk image:

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hdiutil create Dropbox.dmg -srcfolder Dropbox -volname "IDs Dropbox Image" -encryption

During the creation of the disk image, you will be prompted to enter a password that will allow access to the contents of the disk image. Please remember this password, otherwise you cant access your data in the image!