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Ubuntu Linux CD: Default Username and Password

Can you tell me the default username and password for an Ubuntu Live CD? How do I login using Ubuntu Linux live cd?
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du Command Output In Human Readable Format ( GB / MB / TB )

I need to get a list of sizes in human readable du output format. How do I get the output for du command in GB under Linux or UNIX operating systems?
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Linux / UNIX: Find Volume Information From CDs and ISO Images

Q. I can use dd command to create ISO images from a CD but how do I get volume information from CDs and ISO images from a shell prompt?
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Where do I download Red Hat Enterprise Linux?

Q. Where do I download Red Hat Enterprise Linux?

A. Red Hat Enterprise Linux is not available for download. It is a commercial and supported Linux distribution.

Red Hat Network (RHN) (free registration required) has the trial version or demo version and you can download ISO images for Red Hat Enterprise Linux. After evaluation period you need to purchase support.

However I recommend downloading CentOS which is 100% Red Hat Enterprise Linux based free system. Another option is to try out Debian stable Linux.

You may also get free RedHat Enterprise Linux (RHEL) if you are leasing a server from dedicated hosting service providers.

Linux burn ISO images to Cds and CD-RWs howto

Linux comes with various GUI and command line application to burn ISO images to CDs/CD-RWs. Cdrecord is command line based application used to record data or audio Compact Discs on an Orange Book CD-Recorder or to write DVD media on a DVD-Recorder i.e. it can brun ISO images.

Find out your CDR/W SCSI address/device name

Scan all SCSI devices on all SCSI busses and print the inquiry strings with –scanbus option. This option may be used to find SCSI address of the CD/DVD-Recorder on a system:
# cdrecord -scanbus

Cdrecord-Clone 2.01a34 (i686-pc-linux-gnu)
Copyright (C) 1995-2004 Jrg Schilling
scsidev: 'ATA:'
devname: 'ATA'
scsibus: -1 target: -1 lun: -1
Warning: Using badly designed ATAPI via /dev/hd*
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
1,0,0 100) 'SONY' 'CD-Writer' '1.0g'
1,1,0 101) *
1,2,0 102) *
1,3,0 103) *
1,4,0 104) *
1,5,0 105) *
1,6,0 106) *
1.7.0 107) *

In above example, my device name is 1,0,0. Now again use the cdrecord command to burn ISO image:
# cdrecord -v -dao dev=1,0,0 file.iso
You can also specify burning speed:
# cdrecord -v -dao dev=1,0,0 speed=8 file.iso

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