Linux: use a file as an encrypted partition with losetup

On my notebook i’ve decided to have a / partition and a cripted home for my user, automagically mounted at boot.
That’s what you need to do, after a fresh Slackware 13.1 installation:

Create the user:

adduser username

then the file to mount as home partition:

dd if=/dev/zero of=/cryptedfile bs=1k count=5000

load the cryptoloop module:

modprobe cryptoloop

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