Wednesday, November 18, 2009

Lesson04:Executing Commands

Executing Commands

In this lesson, you will study how to run commands at the command prompt, and in the process, you will examine some simple commands.

After completing this lesson, you will be able to meet the following objectives:

• Run commands at the command line
• Use the date and cal commands

Running Commands

Commands have the following general syntax:

command options arguments

When you enter a command but do not get any prompt back, the command may be busy executing or may be waiting for input.To interrupt a command that is taking too long to execute, type Ctrl-C.

Occasionally you might enter a command without an argument, where the command waits for input to come from the keyboard. In this case, type Ctrl-C to terminate the command.

You can use semicolons to separate multiple commands on the same line. When the first command finishes, the next one will execute.

For example:

Simple Commands: Examples

The date command prints the system date and time.To configure the format, you can use optional formatting strings. For more information, run the date --help command.

This example demonstrates configuring the format of the date command.

date +"Today is %A,%B,%d,%Y.%nIt is %r,%Z."

You can also set the system time using the date command. To do this, use the date --set command. For example, to set the system clock forward by 40 minutes, use the following:

date --set="+40 minutes"

For more command options, con sult the man pages for the date command. Use the following:

man date

The cal command prints an ASCII calendar of the current month (by default, with no arguments provided). When provided with a single numeric argument, the cal command will give a calendar for the given year. Remember to use a four-digit year; the command cal 09 will give a calendar for the year 09, not the year 2009.

If cal is provided with a month and year as arguments, it will display the calendar for that particular month.

For example:

Saturday, November 14, 2009

RedHat Enterprise Linux Server Installation On VMWare

RedHat Enterprise Linux Server 5.2 Installation On VMWare 7.0

In this post I'll explain the installation of RedHat Enterprise Linux 5 on VMWare 7.0 ......

Note : For Better View Press Full screen Mode

RedHat Enterprise Linux Server 5.2 Installation On VMWare 7.0 from alaahegga on Vimeo.

Tuesday, November 10, 2009

Linux RedHat Installation On VMWare On Virtual Box On Virtual PC

Linux RedHat Installation On VMWare On Virtual Box On Virtual PC

Comming Soooooooooooooon

Sunday, November 8, 2009

Download Books :100 Success Secrets on RHCE Linux Test Preparation, Study Guides

100 Success Secrets on RHCE Linux Test Preparation, Study Guides, Practice Exams, Braindumps, Certification Exam Guides, Sample Questions, Preparation, Tips and Tricks, and Much More.

Friday, November 6, 2009

Your way to take RHCE Study Materials and Tools For RHCE:::الطريق الى الحصول على شهادة الينكس RHCE

In this post I'll discuss the books study materials and tools for passing and taking RHCE exam.


1-Two Redhat Enterprise Linux 5 Client latest 5.4 or Centos 5.4 client

2-one RedHat Enterprise Linux 5 Server lates 5.4 or Centos 5.4 Server

Download RHEL5.4 and Centos 5.4 torrnet


Redhat Enterprise Linux V5.4 DVD




Download Centos DVD

3- VMWare Workstation latest 7.0 or Sun VirtualBOX 3.0.8



Books and Materials

1-RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302), Fifth Edition by Michael Jang.

2-Red Hat Ent. Linux Deployment Guide

3-Red Hat Enterprise Linux Install Guide

4-Red Hat Virtualization

5-Cluster Suite for Red Hat Ent. Linux 5

6-Configuring/Managing a Red Hat Cluster

7-Configuring/Managing a Red Hat Cluster

8-Red Hat Magazine

9-Red Hat Videos

10-News Blog



1-LinuxCBT Enterprise Linux 5 Edition EL-5- RS

2-VTC Red Hat Certified Engineer RHCE Tutorials

Part 01 :

Part02 :

Part03 :


Monday, November 2, 2009

All Last Three Lessons :: جميع الدروس السابقه

All Last Three Lessons :: جميع الدروس السابقه

Lesson01 Part01

Lesson01 Part02

Lesson02 Part01

Lesson02 Part02

Lesson03 Part01

Lesson03 Part02

Lesson03 Part03

Sunday, November 1, 2009

VTC Red Hat Certified Engineer RHCE Tutorials

VTC Red Hat Certified Engineer RHCE Tutorials :: شرح دورة RHCE

Welcome (05:28) T
System Requirements (02:54) T

Additional Information for the RHCE Exam

What Else to prepare for the RHCE Exam (02:09) T
Logical Volume Management (04:07) T
Logical Volumes During Installation (06:00) T
Logical Volumes After Installation Pt.1 (02:20) T
Logical Volumes After Installation Pt.2 (06:09) T
Setting up a Kickstart File (04:49) T
An Automated Kickstart Installation (03:48) T
Reviewing Rescue Mode (06:23) T
Problems during the boot process (04:35) T
What can go wrong with GRUB (07:36) T
Create a network installation server (05:01) T

System Monitoring and Fault Analysis

System Performance and Security Concepts (04:46) T
System Faults and Breaches (05:00) T
Method of Fault Analysis (03:03) T
Benefits of System Monitoring (03:20) T
Managing Process by Account (02:24) T

System Service Analysis

System Service Access Controls (06:48)
Service and Network Access Controls (04:30)
Service and Application Access Controls (03:06)
tcp_wrappers Configuration (04:11)
Security Enhanced Linux (SELinux) (05:09)
Network Configuration and Security
Network Resource Access Controls (03:20)
Dynamic Interface Configuration (03:48)
Static Interface Configuration (03:10)
Routing Configuration Pt.1 (02:28)
Routing Configuration Pt.2 (05:52)
Netfilter Overview (06:11)
iptables Firewall Rules (06:09)
Firewall Rules by IP address (06:21)
Network Access Translation (NAT) (03:17)

Network Support Services
Organizing Networked Systems (02:08)
Host Name Resolution (03:07)
Trace a DNS Query with the dig command (02:47)
Exploring DNS with the host command (02:49)
An Overview of Domain Name Services (03:15)
DNS Packages (05:14)
Configuring a BIND Caching Nameserver (06:40)
Setting up a Slave Nameserver (05:17)
BIND in sysconfig and command support (04:04)
The DHCP Service (05:57)
Configuring an NTP Server (05:37)

Sharing on a Network

Network File Sharing Services (02:26)
FTP – Basic Server Configuration (05:05)
FTP – Security Options (06:09)
NFS – Basic Server Configuration (03:47)
NFS – Security Options (04:49)
Samba – Basic Server Configuration (06:10)
More on Samba (06:25)
Samba Security Options (03:59)
File Server Security (03:28)

Apache Web Services and More

Apache Web Services (03:02)
Critical Apache Configuration Directives (06:28)
Creating a Virtual Host (06:55)
Limiting Access to an Apache Website (05:33)
Apache and SELinux (03:39)
Creating a Secure Apache Host (07:24)
Configuring the Squid Web Proxy (05:27)

Configuring Email Services

Email Protocols and Agents (04:02)
Basic sendmail Configuration Pt.1 (04:33)
Basic sendmail Configuration Pt.2 (03:38)
Basic Postfix Configuration (04:33)
Switching Between SMTP Services (02:47)
Mail Retrieval Protocols (03:39)
Creating Secure Remote Access
A Secure Shell Server (06:17)
Configuring Secure Certificates (05:24)
Secure Shell Keys (07:10)

Account Security

Basic Account Management (03:02)
Name Service Switching (04:19)
Pluggable Authentication Modules (PAM) (04:19)
Utilities and Authentication (04:52)
Making PAM Work For You (05:57)

Troubleshooting and System Maintenance

Use the Rescue Environment (06:38)
Diagnose and Correct Boot Failures (06:04)
Address Problems with Network Services (06:04)
Add, Remove, and Resize Logical Volumes (03:22)
Diagnose SELinux Network Problems (02:32)

Installation and Configuration

Install Packages for Network Services (04:08)
Configure SELinux for Network Services (02:49)
Configure Services to Start on Boot (03:43)
Configure Basic Service Operation (03:29)
Configure User/Host-based Security (03:52)
Configure Kickstart Installations (02:45)
Add Logical Volumes during Installation (03:47)
Use iptables to for Firewalls and NAT (04:33)
Use PAM for User-Level Restrictions (03:35)
Wrap-up Wrap-up Pt.1 (03:33)
Wrap-up Pt.2 (05:36)


About the Author (01:23)


Part 01 :

Part02 :

Part03 :


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