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I want to convert a .iso file to a .img file. So I write:

hdiutil convert -format UDRW -o ~/home/antu/target.img ~/home/antu/ubuntu.iso

in a terminal window. It shows that:

hdiutil: command not found

So please help me?

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Why would you need a .img file in Linux? – Luís de Sousa Jan 30 '14 at 9:09
He wants it on OSX – Thiago F Macedo Jun 12 '14 at 8:07

Welcome to AskUbuntu. hdiutil is a proprietary software developed by US software company Apple, it does not run on Linux.

You can use ccd2iso for the reverse conversion; first install it:

sudo apt-get install ccd2iso

And then run it:

ccd2iso ~/home/antu/target.img ~/home/antu/ubuntu.iso
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ccd2iso can convert img -> iso, but unless I'm utterly wrong, the OP wants it the other way around. – Klaus Warzecha Jan 30 '14 at 8:58
Yes you are right, he actually states it quite clearly. The question then is: what is the usage of an .img in Linux? – Luís de Sousa Jan 30 '14 at 9:07
I have no idea. I use ready-made images for installation only (Ubuntu, Raspbian, etc.). – Klaus Warzecha Jan 30 '14 at 9:18
Actually, it might be exactly that. Turn an iso to a bootable medium. – Klaus Warzecha Jan 30 '14 at 9:21

ccd2img converts only raw img files to iso files.

There are also 'Apple Disk Image' files (Mac OS 9 and earlier) which also end with the img postfix but are completely different.

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