Can someone please help me understand this Linux command?
`blockdev --getsize /dev/sdb2` (in backticks) is a command to get partition size, where /dev/sdb2 is the (encrypted) partition and most likely has a different name on your pc
&lt;Put the 16-byte hex key here&gt; is a placeholder for the real encryption key you have previously extracted from /data/misc/vold
dmsetup create crypt1 is the actually command to decrypt /dev/sdb2
when successfull a new (decrypted) block device /dev/mapper/crypt1 (ext4) will created
Note: root permissions required. open root shell with sudo -i before running this Linux command