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Commands tagged dd

Terminal - Commands tagged dd - 55 results

dd if=/dev/zero of=/dev/sdb bs=446 count=1

2009-06-07 10:29:49

User: dcabanis

Functions: dd

Tags: dd grub boot usb

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Remove the boot loader from a usb stick

If you don't want your computer to try to boot form a USB stick that used to be used as a boot device (maybe for a live linux distro), you will have to remove the boot loader from your stick other wise the boot will fail each time the device is attached to your PC.

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sudo dd if=/dev/zero of=/swapfile bs=1024 count=1024000;sudo mkswap /swapfile; sudo swapon /swapfile

2009-05-27 21:10:50

User: dcabanis

Functions: dd mkswap sudo swapon

Tags: Filesystem dd swapoff swapon

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create an emergency swapfile when the existing swap space is getting tight

Create a temporary file that acts as swap space. In this example it's a 1GB file at the root of the file system. This additional capacity is added to the existing swap space.

echo -n $HEXBYTES | xxd -r -p | dd of=$FILE seek=$((0x$OFFSET)) bs=1 conv=notrunc

2009-03-11 17:02:24

User: zombiedeity

Functions: dd echo

Tags: bash dd binary hex edit xxd

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Binary injection

Replace (as opposed to insert) hex opcodes, data, breakpoints, etc. without opening a hex editor.

HEXBYTES contains the hex you want to inject in ascii form (e.g. 31c0)

OFFSET is the hex offset (e.g. 49cf) into the binary FILE

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killall -USR1 dd

2009-03-04 08:30:20

User: vint

Functions: killall

Tags: dd

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show dd progress

if you need see progress of long dd command, enter subj on other console

sudo dd if=/dev/sda of=/media/disk/backup/sda.backup

2009-02-27 20:23:37

User: bandit36

Functions: dd sudo

Tags: backup dd

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Backup your hard drive with dd

This will create an exact duplicate image of your hard drive that you can then restore by simply reversing the "if" & "of" locations.

sudo dd if=/media/disk/backup/sda.backup of=/dev/sda

Alternatively, you can use an SSH connection to do your backups:

dd if=/dev/sda | ssh user@ssh.server.com dd of=~/backup/sda.backup

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