I'm dedicated agile security architect/system architect/developer with specialty of open source framework.
June 11, 2015
Use YubiKey for 2 Factor Authentication on Ubuntu 14.04
To increase the security for your Google Account you can use 2 factor authentication with SMS. But also you can use YubiKey. To get that to work on Ubuntu 14.04 follow the instruction here http://ihaveagadget.blogspot.se/2014/11/yubico-u2f-key-not-working-in-ubuntu.html.
How to Create a Bootable USB for Linux ISO
Introduction
The most generic way to create a bootable USB with a Linux ISO file, is to use the dd command.
Prerequisite
On RHEL/CentOS/Fedora
# yum install syslinux
On Ubuntu/Debian
$ sudo apt-get install syslinux
Steps
1. Download ISO file
2. Convert your normal ISO file to a hybrid ISO.
# isohybrid /home/magnus/Downloads/ubuntu-12.04.4-desktop-amd64.iso
3. Create a bootable USB.
$ dd if=/home/magnus/Downloads/ubuntu-12.04.4-desktop-amd64.iso of=/dev/sdf
1501184+0 records in
1501184+0 records out
768606208 bytes (769 MB) copied, 286.08 s, 2.7 MB/s
NOTE: the device name is without number, e.g. /dev/sdf1.
If you are unsure what the device name is you can e.g. use lsblk.
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
sda 8:0 0 167.7G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 146.5G 0 part
├─vg_rhel6-lv_root (dm-0) 253:0 0 127G 0 lvm /
└─vg_rhel6-lv_swap (dm-1) 253:1 0 19.5G 0 lvm [SWAP]
sdf 8:80 0 3.7G 0 disk
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