Jan 12
27

My Linux Skills timetable!

To be more focused on Linux, I have established a timetable to stick with it. By the end of February 2012 I should be capable to work with Linux (Red Hat) with minimum or without help!
Here is the list (this list matches the objectives from this web site), if possible I will attend one of these trainings

Automated Installations of Red Hat Enterprise Linux

  • Create and manage kickstart configuration files;
  • Perform installations using kickstart

Accessing the Command Line

  • Access the command line locally and remotely;
  • Manage administration privileges from the command line

Command Line Tools

  • Use hardlinks;
  • Use archives and compression;
  • Use vim

Regular Expressions, Pipelines, and I/O Redirection

  • Use regular expressions to search patterns in files and output;
  • Redirect and pipe output

Network Configuration and Troubleshooting

  •  Configure network settings;
  • Troubleshoot network issues

Managing Partitions and Filesystems

  • Create and format partitions,
  • Create and manage swap partitions ;
  • Create and manage encrypted partitions

Managing Flexible Storage with Logical Volumes

  • Implement LVM;
  • Implement LVM snapshots

Access Network File Sharing Services

  • NFS,
  • CIFS
  •  Autofs

Managing User Accounts

  • Manage user accounts including password aging;
  • Connect to a central LDAP directory service

Controlling Access to Files

  • Manage group memberships,
  • File permissions;
  • Access control lists (ACL)

Managing SELinux

  • Activate and deactivate SELinux;
  • Set file contexts;
  • Manage SELinux booleans;
  • Analyze SELinux logs

Installing and Managing Software

  •  Manage software and query information with yum,
  •  Configure client-side yum repository files

Managing Installed Services

  • Managing services,
  • Verify connectivity to a service

Analyzing and Storing Logs

  • Managing logs with rsyslog and logrotate

Managing Processes

  • Identify and terminal processes,
  • Change the priority of a process,
  • Use cron and at to schedule processes

Tuning and Maintaining the Kernel

  • List, load, and remove modules;
  • Use kernel arguments

Troubleshooting

  • Understand the boot process,
  • Resolve boot problems
Posted in Linux by gaspard. No Comments

Jan 12
18

Root password recovery

To recovery the root password; just reboot your Linux system in runlevel 1. You get the root terminal without password. From this terminal, type passwd for a new password. Amazingly, this is a breach of the security, so as said Crawley, the physical security is important! Your servers should be locked in secure rooms!

For the hurries, to learn Linux this book is really good. But it is just an introductory book.

 

Posted in Security by gaspard. No Comments

Jan 12
18

Commonly Used Commands

Some people do not  like Linux because of using shell commands. But I would like to tell them that I like Linux because of command line. With Linux you know what you are doing and you know what is going behind the process. Some time it is scary to see people working on terminal with shell commands. To be honest, for three years I spent working with Linux I found that the shell command are the same and intuitive for English speakers!

Here is the list of the commonly Used shell commands (not finished yet)

su: switch User

cd: change directory

pwd: print working directory

mkdir: make directory

rmdir: remove a directory (delete)

rm: remove file (delete a file)

cp: copy

mv: move

ls: list a directory content

The shell commands list is not finished yet, but what I would like to say is that Linux is easy to learn and do not be scared by command line. More to come.

For further information you can have a look at this web site .

 

 

 

Posted in Shell Commands by gaspard. No Comments

Jan 12
2

Linux Books

After seven years without working on Linux box, I have to read some books just for refreshing my memory and as things change quickly in technology, I have to see where I stand with Linux skills.

Read the rest of Linux Books

Posted in Books by gaspard. No Comments

Jan 12
1

Intel Virtualization Technology and My Experience!

I like trying new technologies and last week I was really disappointed by a new desktop PC (Intel Core 2 Duo) I bought from ebay.co.uk. Generally I never buy new computer unless it is for a customer. When I want to try something, I use old box usually bought from ebay or from my friend who wants to get rid of the old stuff!

I read that all core 2 duo processors can be used for virtualization but the  reality is different. I pass two hours to figure out that some Intel Core 2 Duo do not support the virtualization. You can have a  look at this web site which processor can be used for virtualization.

Gaspard

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Posted in Virtualization by gaspard. No Comments

Dec 11
27

New Year, New Aims! Linux Skills!

New Year, New Aim!

 Last two years  I was focused on Asp.net (C#) and now for this coming year 2012, I will be reading, writing and working with Linux (Red Hat, Fedora and Scientific Linux). 

Ten years ago I spent three years working on Linux (Suse Linux) and now I wanna go back to Linux Skills. It is enjoyable, with Linux I never get tired, time runs quick!

Anyway Happy New Year 2012! All the best!

Posted in Linux by gaspard. No Comments