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Download CentOS 7 ISO / DVD / x86_64 / i386 / 32-Bit / 64-Bit

Hello,

Hello and welcome to the first CentOS-7 release. CentOS is an Enterprise-class Linux Distribution derived from sources freely provided to the public by Red Hat1.

CentOS conforms fully with Red Hat’s redistribution policy and aims to have full functional compatibility with the upstream product. CentOS mainly changes packages to remove Red Hat’s branding and artwork.

We have decided not to follow Red Hat’s usage of Installation Codes. All ‘channels’ are available to the System Administrator at time of installation.

CentOS

CentOS

For the first time, there is a supported upgrade path from CentOS-6 to CentOS-7. This path is only supported from the latest version of CentOS-6 (being 6.5 at the time of writing) to the latest version of CentOS-7. For more information on the upgrade procedure please take a look at this page. The tools needed for this functionality are still being tested and will be released at a later time. If you can help with the testing, please see this CentOS-Devel mailing list thread.

Link to Download CentOS 7 :- http://www.centos.org/download/

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Script for Check Bulk IP Ping / Status / Health | Linux

Hello,

Sharing Basic script which I have shared in Some LUG before few months.

Sharing it here because it will help to people who wants to check PING of Bulk IP Addresses and check status and health by pinging the IP Address.

Again repeating this is very basic script and many changes required to improve, You can suggest me or you can send me improve one so i will update it over here. Your Suggestions are always welcome.

PING

PING

Requirements to run Script :-
1. One File which contains all IPs. One IP per line.
2. If you have different class, From system which you are running this script must contact those hosts. Routing must be through to get ping.
# Below is example file. which is containing IP List
[root@tejas-barot-lenovo ~]# cat /root/ping.txt
192.168.1.1
192.168.1.6
192.168.0.1
192.168.5.1
#Below is script which will helps you. Script is not dynamic with variable and all
[root@tejas-barot-lenovo ~]# cat /root/ping.sh
####### Script Starts from here ######
#!/bin/bash
# -c3 = is ping count, It will ping for 3 times, You can increase or decrease this number.
for PNG in $(cat /root/ping.txt)
do
ping -c3 $PNG > /dev/null 2>&1
VAL=$?
if [ $VAL = 0 ] ; then
echo “Success Ping… Host $PNG is up”
else
echo “No Ping…Host $PNG is Down”
fi
done
##### Script Ends here ##
You can also you fping :
As Normal User, fping will not allow you to specify -f, -f is allowed for root only.
As a Normal user you can try, even as root you can try following :-
$ fping < <file-name-with-ips>

# fping < <file-name-with-ips>

Hope this will helps you.
Enjoy Linux :) Enjoy Scripting :)  Enjoy Open Source :)
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Thank You India for making Narendra Modi as Prime Minister of India

Hello All,

Firstly I would like to Congratulate Shri Narendra Modi for becoming Next Prime Minister of India.

This Election was special, tough and very Surprising for not only Political parties but also People of India. Specially This election was toughest for BJP as BJP was struggling to get into the power from Last 10 years, But i will not go much in detail about politics.

I want to Thank You India and Specially want to Thank India for Rejecting “Communalism Vs Secularism, Anarchists, Anti Nationalists, Negative Campaigning and many more”. Other side I want to thank Shri Narendra Modi and BJP for sticking to Development and Governance agenda in this election. Congratulations to BJP and Narendra Modi for getting Positive Mandate of India.

I am quickly moving on to the Subject and I want to Thank People of India for Electing Narendra Modi as Prime Minister of India. What more important is People of India elected Shri Narendra Modi smartly and with huge responsibility, After 30 years People of India given Clear Mandate, Given Majority to BJP and more than 50% seats to Only BJP and NDA is 330+ seats. So India chosen Strongest government after 30 years.

Prime Minister of India

Prime Minister of India

I want to Thank People of India for giving Majority to Shri Narendra Modi and BJP. Strong government for India was Much needed and I am very happy that People of India understood this very well and choosing Modi/BJP clearly, We have seen governments from last 30 years with inside or outside support which obviously stops and develops India slowly.

This Government is now in Clear Majority and This government will not work in any pressure and More importantly We have Narendra Modi as Prime Minister of India who is very well known for Development, Good Governance, Decision maker and quick decision maker. Now I am very sure that One India will be Best India and Developed India.

Being Gujarati I have seen Development and Governance under Shri Narendra Modi in Gujarat as Chief Minister and I want to assure people of India that You will never feel that you have voted for wrong person, This person will make your Vote’s value count and will make “Bhavya and Divya Bharat“.

In just few years, I am sure we will proudly say that “Every Part of India is Secure, India is Developed, We have the best Governance, We have PM who takes quick and right Decisions”.

One more time, Thank You India for Making Narendra Modi as Prime Minister of India and Voted for Governance and Development. CongratsNamo.

Last but not the Least, I want to Congratulate campaigning and advertising team of BJP for doing positive campaign like “Achche Din Aane walen Hain”, “Ab Ki Baar Modi Sarkaar”.

Victory Speech of Prime Minister of India from Ahmedabad :-

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Disable / Password Protect Single User Mode / RHEL / CentOS / 5.x / 6.x

Hello All,

If you have not protected Single User Mode with Password then it is big risk for your Linux Server, So protecting Single User Mode with Password is very important when it comes to security,

Today in this article i will show you how you can protect Single User Mode with Password on RHEL / CentOS 5.x and RHEL / CentOS 6.x.

Please execute given commands carefully else your system will not boot properly. First i would request you to read full procedure and then try to follow. Do it at your own risk :-)

 

Password Protect

Password Protect

 

1. For RHEL / CentOS 5.x

1.1 Before doing anything please take backup of your /etc/inittab

cp /etc/inittab /etc/inittab.backup

To Disable and Make Single User Mode Password Protected, Execute below command as root :-

[root@tejas-barot-linux ~]$ sed -i '1i  su:S:wait:/sbin/sulogin'

So It will look like below

su:S:wait:/sbin/sulogin
# Default runlevel. The runlevels used by RHS are:
# 0 - halt (Do NOT set initdefault to this)
# 1 - Single user mode
# 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
# 3 - Full multiuser mode
# 4 - unused
# 5 - X11
# 6 - reboot (Do NOT set initdefault to this)
#
id:3:initdefault:

NOTE: If you do not want to use sed command then You can always add “su:S:wait:/sbin/sulogin” at top in /etc/inittab

2. For RHEL / CentOS 6.x

2.1 Before doing anything please take backup of your /etc/inittab

cp /etc/sysconfig/init /etc/sysconfig/init.backup

2.2 To Disable and Make Single User Mode Password Protected, Execute below command as root :-

[root@tejas-barot-linux ~]$#sed -i 's/SINGLE=\/sbin\/sushell/SINGLE=\/sbin\/sulogin/' /etc/sysconfig/init

So It will look like below

SINGLE=/sbin/sulogin

NOTE :- If you do not want to use sed command then You can always change to “SINGLE=/sbin/sulogin” in /etc/sysconfig/init

Enjoy Linux :) Enjoy Open Source

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Hide Users / Login as “Other” user from Login Screen | Ubuntu 14.04 LTS Trusty Tahr

Hello All,

This Article will show you how to Hide Users  and Login as “Other” user from Login Screen of Ubuntu 14.04 LTS Trusty Tahr.

I have installed Ubuntu 14.04 LTS Trusty Tahr on First day of its release, As of now, Not a single crash took place which is great indication of Stability. I noticed few LightDM related changes in Ubuntu 14.04 LTS Trusty Tahr.

In previous versions of Ubuntu like 13.04 and 13.10 there was “/usr/lib/lightdm/lightdm-set-defaults” command, By using this command you can  Hide Users and / enable Login as “Other” User option  by executing on command prompt but in Ubuntu 14.04 LTS Trusty Tahr this command doesn’t exist. But not to worry, I managed to do it by editing / updating lightDM configuration.

To Hide Users  and Login as “Other” user from Login Screen, Following steps will help you :

1. Mandatory : root access or sudo access equivalent to root.

2. /etc/lightdm/lightdm.conf doesn’t exist by default on Ubuntu 14.04 LTS Trusty Tahr, So we have to create it as per our requirement.
2.1 Execute following command :

root@tejas-barot-linux:~$ sudo touch /etc/lightdm/lightdm.conf

2.2 Add following contents to /etc/lightdm/lightdm.conf , Save and Exit from file.

=> sudo vi /etc/lightdm/lightdm.conf
[SeatDefaults]
greeter-show-manual-login=true
greeter-hide-users=true
Hide_Users_Manual

Hide_Users_Manual

3. Now restart your system and You will not be able to see Users on Login Screen and You will able to login as “Other” User from Login Screen.

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Enjoy Ubuntu 14.04 LTS Trusty Tahr :-) Enjoy Linux :-) Enjoy Open Source :-)

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Hide / Disable Guest / Remote Login on Ubuntu 14.04 LTS Trusty Tahr

Hello All,

This Article will show you how to Hide or Disable Guest Login and Remote Login from Login Screen of Ubuntu 14.04 LTS Trusty Tahr.

I have installed Ubuntu 14.04 LTS Trusty Tahr on First day of its release, As of now, Not a single crash took place which is great indication of Stability. I noticed few LightDM related changes in Ubuntu 14.04 LTS Trusty Tahr.

In previous versions of Ubuntu like 13.04 and 13.10 there was “/usr/lib/lightdm/lightdm-set-defaults” command, By using this command you can Disable / Enable / Hide / Show Guest Login or Remote login by executing on command prompt but in Ubuntu 14.04 LTS Trusty Tahr this command doesn’t exist. But not to worry, I managed to do it by editing / updating lightDM configuration.

To Disable / Hide Guest Login / Remote Login, Following steps will help you :

1. Mandatory : root access or sudo access equivalent to root.

2. /etc/lightdm/lightdm.conf doesn’t exist by default on Ubuntu 14.04 LTS Trusty Tahr, So we have to create it as per our requirement.
2.1 Execute following command :

 root@tejas-barot-linux:~$ sudo touch /etc/lightdm/lightdm.conf

2.2 Add following contents to /etc/lightdm/lightdm.conf , Save and Exit from file.


 => sudo vi /etc/lightdm/lightdm.conf
 [SeatDefaults]
 greeter-show-remote-login=false
 allow-guest=false
Guest_Remote_Login_Ubuntu

Guest_Remote_Login_Ubuntu

3. Now restart your system and You will not be able to see Guest / Remote Login on Login Screen.

Enjoy Ubuntu 14.04 LTS Trusty Tahr :-) Enjoy Linux :-) Enjoy Open Source :-)

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Be a “Narendra Modi” Voter | My Appeal to Vote for Modi

First of All Sorry to all those who follows my Blog only for Linux and Open Source HowTos and Article. Sorry for CONgress and Aam Aadmi Party followers who follows my blog too !

Hello Indians,

I am writing this article to Support Shri Narendra Modi ji as Next Prime Minister of India. Narendra Modi ji is contesting this election only on Development, Governance and Corruption issues and more importantly He is presenting Gujarat Development and Governance Model to Country’s people.

I am an Indian First, So First as a Indian and Secondly as a Gujarati, I am appealing to all voters of India to Vote for Shri Narendra Modi. I can write so many things about Shri Narendra Modi’s work and his development.

Narendra Modi

 

What is the Aam Aadmi’s need in India !?

1. 24 hour Uninterpreted power supply. (24 hour electricity)

2. Enough water.

3. Good Roads, Good Highways

4. Internal Security.

5. Women Security.

6. Development.

7. Big Industries to invest and increase employment.

8. Give importance to e-Governance.

9. “ZERO” tolerance on Corruption issues.

10. Importance to Technology.

11. End Politics of Communal Vs. Secular, Only Indians ( No Caste, No Dharma, No Riots, nothing)

12. Bring Black Money back to the Country.

From Point 1 to Point 11 all points implemented successfully by Shri Narendra Modi in Gujarat, 12th point is issue of Central Government and I am sure he will bring all Black money back to the country !

Many more things done by Shri Narendra Modi in Gujarat, Above 12 points are very basic which India needs and needs it badly. If you vote for Shri Narendra Modi, I am sure after 60 months, above 10 points will never be a part of any party’s manifesto.

Congress was in Power for 60 years, they did nothing.

Rahul Gandhi is very inexperienced and He has not done anything to show as his benchmark.

Arvind Kejriwal is just fresher, inexperience and ran away from his responsibility in  just 49 days.

Shri Narendra Modi is handling Gujarat 12+ year with so much criticism, My Request to all Indian “Responsible” voter is “Lets give Shri Narendra Modi a one chance for 60 months and He will change the Our country.”

Congress & Rahul Gandhi did “Vikas Khoj Yatra” and they failed.

Avind Kejriwal did “Gujarat Tour”, he failed and he lied about Gujarat and its development.

As an Aam Aadmi of India, I would like to say, I have experienced Superb Governance and Awesome Development in Gujarat, I am sure if people of India will vote for Narendra Modi, he will work for Development, Governance and all the basic issues.

So Let’s all Says, Ab Ki Baar Modi Sarkaar, and Yes, If you will be a “Modi” Voter, Achche Din Pakke se Aane wale Hain.

Let’s make Mission272+ Successful and even better by giving 300 seats to BJP for better India.

Jai Hind Guys, Please Vote for Change, Vote For India, Vote for Shri Narendra Modi and make sure Ab Ki Baar 300 paar.

More important, If you even don’t like any candidate Just go and Vote, but please please please celebrate biggest Indian Democracy festival.

India is largest Democracy of the WORLD. Let’s go out and VOTE.

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Download Ubuntu 14.04 LTS Trusty Tahr ISO / CD / DVD / x86_64 / 32-Bit / MAC

Hello,

This post will contain links for Downloading Ubuntu 14.04 LTS Trusty Tahr Final.

Links of Final Version of Ubuntu 14.04 LTS Trusty Tahr is updated in this post.

I always Prefer New Releases of Ubuntu and Instantly Install it for Experience the New World of Ubuntu, Ubuntu is very fast to recognize and Fix the Bugs so even if you install it very early you will get bug fixes very quickly and that’s the reason I switch to Ubuntu from Fedora as Fedora is very Lazy in releases as well as Bug fixes and Even Resource Hungry too.

Once you download and use this Ubuntu 14.04 LTS Trusty Tahr then please do not forget to post comments on your experience.

Ubuntu 14.04 LTS

Ubuntu 14.04 LTS

 

Now Ubuntu 14.04 LTS Trusty Tahr is now available to download in Final.

Ubuntu 14.04 LTS Final ISO is available for Download in 32-Bit (i386 ) and X86_64 ( 64-Bit) Versions.

You can go through this link and Download Ubuntu 14.04 LTS Trusty Tahr Final  :-

Download Ubuntu 14.04 LTS Trusty Tahr 32-Bit ( i386) :- http://releases.ubuntu.com/14.04/ubuntu-14.04-desktop-i386.iso

Download Ubuntu 14.04 LTS Trusty Tahr x86_64 ( 64-Bit) :- http://releases.ubuntu.com/14.04/ubuntu-14.04-desktop-amd64.iso

Download Ubuntu 14.04 LTS Trusty Tahr Server Edition 32-Bit ( i386) :- http://releases.ubuntu.com/14.04/ubuntu-14.04-server-i386.iso

Download Ubuntu 14.04 LTS Trusty Tahr Server Edition X86_64 ( 64-Bit) :- http://releases.ubuntu.com/14.04/ubuntu-14.04-server-amd64.iso

Download Ubuntu 14.04 LTS Trusty Tahr For Mac Desktop :- http://releases.ubuntu.com/14.04/ubuntu-14.04-desktop-amd64+mac.iso

Download Ubuntu 14.04 LTS Trusty Tahr For Mac Servers :- http://releases.ubuntu.com/14.04/ubuntu-14.04-server-amd64+mac.iso

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Enjoy Ubuntu 14.04 LTSTrusty Tahr    Enjoy Linux   Enjoy Open Source 

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