On startup init reads the /etc/event.d directory, each file describes a
job that should be managed.  This includes the particulars  about  what
binary  or  shell script code should executed while the job is running,
and which events can cause the job to be started or stopped.

By default most red server there default run level is 3
Red hat work station default run level is 5
By through init command we can switch run level form one level to another level.
#init 3
The above command switch the system from current run level to run level 3=
1:345:respawn:/sbin/mingetty tty2 in /sbin/init
The above line directs /sbin/init to run the mingetty program on tty2 in run levels 3 through 5

• changes on anaconda installation it allow installations on SANS and DASD
• new layout to select the place to install it show you all options in one screen with all definitions and warnings.
• new layout to choose the type of file system to use, allow you to see all options you have from standard partition, raid options and LVM, all handle on one simple screen.
• Disk Utility has a mayor change on Fedora 13, it can manage LVM, RAID devices

Features :

• Linux Kernel 2.6.32
• Mozilla Firefox 3.6
• 3D Support for Nvidia cards
• NetBeans 6.8
• Python 3
• KDE 4.4
• Gnome 2.30
• Support for mounting NFS servers over IPv6
• RPM 4.8

Click here to download

DMI information :

0   BIOS
1   System
2   Base Board
3   Chassis
4   Processor
5   Memory Controller
6   Memory Module
7   Cache
8   Port Connector
9   System Slots
10   On Board Devices
11   OEM Strings
12   System Configuration Options
13   BIOS Language
14   Group Associations
15   System Event Log
16   Physical Memory Array
17   Memory Device
18   32-bit Memory Error
19   Memory Array Mapped Address
20   Memory Device Mapped Address
21   Built-in Pointing Device
22   Portable Battery
23   System Reset
24   Hardware Security
25   System Power Controls
26   Voltage Probe
27   Cooling Device
28   Temperature Probe
29   Electrical Current Probe
30   Out-of-band Remote Access
31   Boot Integrity Services
32   System Boot
33   64-bit Memory Error
34   Management Device
35   Management Device Component
36   Management Device Threshold Data
37   Memory Channel
38   IPMI Device
39   Power Supply

TO run dmidecode you need to be root or sudo users.

$dmidecode

for example if you want to know the system information,it will display in below format

System Information
Manufacturer:
Product Name:
Version: ThinkPad
Serial Number:
UUID:
Wake-up Type: Power Switch
SKU Number: Not Specified
Family:

Linux Mint uses GNOME as its main desktop. Editions are also available for the following desktops:

• KDE
• Xfce
• LXDE
• Fluxbox

Linux Mint currently supports the Intel x86 and AMD64 architectures.

Features :

o APT daemon
o Visual improvements
o Incremental backups, compression, integrity checks
o Backup/Restoration of the software selection
o Editable items
o Transparent menu
o Always start with favorites
o “Add to” shortcuts
o Changes apply immediately
o Additional options
o Backgrounds
o Welcome screen
o Update Manager
o Windows installer
o Husse quotes
o USB Creator
o Default software selection
o Local repository and Gnome-PPP
o Apt hold/unhold/held commands
o CD & DVD
o Community Editions
o OEM installation disks
o USA/Japan distributors disks
o 32 & 64-bit
o Faster boot
o Long Term Support

Click here to download

There will also be a Ubuntu 10.04 Netbook Edition, which enables netbook users, in addition to benefiting from the improvements in the Desktop Edition, see even faster boot speeds on SSD-based devices and faster suspend/resume that will extend battery life. However, this 10.04 Netbook Edition will not be an LTS.

* Direct upgrade path for Ubuntu 8.04 LTS and Ubuntu 9.10 users
o No need to rip and replace, in-place upgrades
* Stability and security enhancements for LTS including:
o Five years of security and maintenance updates free to all users
o AppArmor security by default on key packages
o Kernel hardening (memory protection, module loading blocking, address space layout randomisation)
o Uncomplicated Firewall extended to all common services
o Encrypted Home and Private directories
* Multiple added or updated applications and packages since 8.04 LTS available as install options, including:
o CouchDB
o Puppet
o Eucalyptus
o Django 1.1
o OpenJDK6
o Tomcat 6
o MySQL 5.1
o ClamAv
o SpamAssassin
o Samba 3.4
o Python 2.6
o Nagios 3
o Ruby
o PowerNap
o PHP 5.3
o KVM 84
o Libvirt 0.7.5
o RabbitMQ 1.7
* Virtualisation enhancements, including:
o Building on Libvirt and KVM for simple deployment and management. KVM now supports:
o Kernel Samepage Merging (KSM) memory aggregation
o Live migration of virtual machines
o Automated and fast image creations with VMBuilder
o Ubuntu as Virtual Machine (VM) supported for VMWare, Xen, KVM, Virtualbox, EC2 and UEC
* Ubuntu Enterprise Cloud (UEC) and Amazon EC2 enhancements, including:
o UEC as well as EC2 images are included in five years of free security and support updates
o Minimal installation profile for minimum footprint VMs optimised for EC2 and UEC
o Ubuntu EC2 images can be booted from EBS
o Multi-language AWS library support
o Easily customised and frequently refreshed images at boot time for super flexibility using cloud-init
o Puppet, a configuration management framework, can be used to mass control instances from their start
* Advanced storage capabilities built in, including
o RAID support from the installer
o iSCSI and multipath support and booting
* Simpler to mass deploy and manage
o Puppet integration in the cloud or as an add-on
o Version control configuration changes (integrated with Puppet), provides history and accountability
o Many new and improved installation profiles
o Built-in package mirroring and network installation tools
o Improved management from Canonical’s Landscape, including:
+ Mass registration
+ Managing both physical servers and VMs
+ Managing Cloud instances on both UEC and EC2, including:
# Security credentials and zones
# Elastic Block Storage (EBS) and Walrus storage elements
# Elastic IPs management
# Cloud topology monitoring
+ Scheduled maintenance (shutdowns and restarts, package updates and script execution)
+ Direct view into server configuration
+ Logical groupings of machines for ease of administration

click here to download

• list attached usb devices

~$lsusb

• write extended usb device information to a file

~$sudo lsusb -v > usbinfo.txt

Here is how to upgrade to the new version of an Ubuntu
Caution:  Beta releases may not work properly, so do this with caution!

1. Hit Alt-F2 to bring up a command line.
2. Check the ‘Run in Terminal’ Box.
3. Type sudo update-manager -d in the box
4. Follow the prompts to upgrade.

New features :

• GNOME – latest GNOME desktop environment.
• Linux kernel 2.6.32
• KDE SC 4.4
• Fully removaed  HAL from the boot process for fast booting.
• Ubuntu One File Syncing
• Ubuntu One Music Store

Lucid Lynx 10.04

Clikc here to Download

“sudo”

here sudo, sudoedit – execute a command as another user.sudo allows a permitted user to execute a command as the superuser or
another user, as specified in the sudoers file.

for examples :

admin@smartproteam$ sudo cat /var/log/syslog

or

you can become as root using below command

admin@smartproteam$ sudo -i

root@smartproteam$ cat /var/log/syslog