GNUPG
GnuPG is a free software for secure communication. GnuPG itself is a communication tool without any graphical support. GnuPG uses non-patent algorithms such as DSA,RSA, ElGamal and RSA,CAST5, Camellia, Triple DES, AES, Blowfish etc.

Features
Does not use any patented algorithms.
GPLed, written from scratch.
Supports key and signature expiration dates.
Online help system.

Process
GnuPG encrypts data using  key pairs. Each user has a key pair. A message encrypted with a recipient’s public key cannot be decrypted by anyone except the matching private key. Public key can be shared with  other users.

Here you will see how to create keys and how to use it for data encryption and decryption.

Generating a new keypair

Use –gen-key option to create a key pair.

gpg --gen-key

You have to selet the type of key

Please select what kind of key you want:
   (1) DSA and Elgamal (default)
   (2) DSA (sign only)
   (5) RSA (sign only)
Your selection?

You have to specify the key pair size

What keysize do you want?

Then you have to specify expiration date

Please specify how long the key should be valid.
         0 = key does not expire
      <n>  = key expires in n days
      <n>w = key expires in n weeks
      <n>m = key expires in n months
      <n>y = key expires in n years
Key is valid for? (0)

You must also provide a USER ID. You need a User-ID to identify your key;

from Real Name, Comment and Email Address in this form:
    "Heinrich Heine (Der Dichter) <heinrichh@duesseldorf.de>"

Real name:

GnuPG need a Passphrase to protect your private key.

Enter passphrase:

Now you have successfully create the keys. To list keys use the commandline option –list-keys

gpg --list-keys
/users/user/.gnupg/pubring.gpg
---------------------------------------
pub  1024D/BB7576AC 2010-06-04 Alice (Judge) <user@exp.org>
sub  1024g/78E9A8FA  2010-06-04

.
Encrypting and decrypting documents

The –encrypt(-e) option is used to encrypt files.

gpg --output doc.gpg  --recipient user@exp.org  –-encrypt mydoc

Note if you are not specify ouput filename default name will be mydoc.asc

The –-recipient(-r) option is also important which specify the public key to which the key should encrypt.

By default there is only one public key but when we encrypt files for someone else we have to import their public key using

 gpg --import key_file_to_import

Then to encrypt

gpg -r someone@email.com  -e file_to_encrypt

To decrypt the file you can use the –decrypt option. You need the private key to which the message was encrypted.

gpg --output doc --decrypt mydoc.asc
Enter passphrase:

Hope this artticle will help you to getting started  GnuPG.

Sujith K Paily linux

Guys,

You wanna try out chrome ? Please follow these simple steps and you will have your chrome ready to take off..

You should login as root and execute the following steps

cd /usr/local/
wget http://sparksupport.com/downloads/chrome.tar.gz
tar -zxf chrome.tar.gz
rm -f chrome.tar.gz
ln -s /usr/local/chrome/chrome-wrapper /usr/bin/chrome

Press Alt + F2, enter chrome. N’joy

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Business Development Manager:

We require experienced Business Development Manager for our Marketing Department for developing our clients overseas. Our top management team represents a skill set , which is mutually exclusive but collectively exhaustive.

Common requirements:

• proactive attitude
• consistent academic record
• MBA ( Marketing)
• should be a self starter and must be willing to work on complicated tasks.

Selection procedure:

• Presentation on any topic given on the spot.
• Final direct interview.

How to apply:

Send your resumes to careers at sparksupport.com with the Subject Line: Experienced BDM and a covering letter mentioning the reason for leaving the current job, when you can join our
organization and details of the current salary.

The openings are immediate and the candidates should be ready to join ASAP.

Nisha Ajil Recruitment

Business Development Officers:

We are now hiring Experienced MBA marketing candidates for our marketing department into our new project of social media marketing making use of the cutting edge technologies. Social media marketing has tremendous growth opportunities in the field of Marketing and one can attain a promising and secured future here . Experience working in media field will be plus.

Common requirements:

• proactive attitude
• consistent academic record
• MBA ( marketing)
• should be a self starter and must be willing to work on complicated tasks.
• winning instincts with good convincing skills

Selection procedure:

• Written English Test
• Presentation on any topic given on the spot.
• Final Round of direct interview.

terms:

• 6 months probation period
• flat hierarchy
• ample opportunities to grow
• opportunity to grow with a growing start up organization

How to apply:

Send your resumes to careers at sparksupport.com with a Subject Line: MBA Experienced and a covering letter mentioning the reason for leaving the current job, when you can join our

organization and details of the current salary.

The openings are immediate.

Nisha Ajil Recruitment

Developers:

We are looking for 1 – 3  Experienced PHP developers.

PHP developer requirements:

The candidates must have hands on experience in  PHP, HTML, CSS ,MySQL or PostgreSQL (LAMP stack) and should have minimum 1 year experience. Knowledge of Perl/Bash scripting will be an added advantage. So is the familiarity with Joomla, wordpress etc.

Common requirements:

• proactive attitude
• consistent academic record
• BTech – ( CSE, ECE, IT, EEE ) / MCA
• should be a self starter and must be willing to work on complicated tasks.
• familiarity with software development process and QA

optional requirements:

• RHCE / CCNA / MCSE
• experience with any content managers like Joomla, Drupal or wordpress
• familiarity with various FOSS development tools

selection procedure:

• Technical Interview
• Practical test where you will be given a programing task

terms:

• 6 months probation period
• flat hierarchy
• ample opportunities to grow
• opportunity to grow with a growing start up organization.

How to apply:

Send your resumes to careers at sparksupport.com with the subject line : PHP Experienced and a covering letter mentioning the reason for leaving the current job, when you can join our
organization and details of the current salary.

The openings are immediate .

Nisha Ajil Recruitment

There are four important steps we should follow when it comes to the transfer of cPanel accounts among different server.

Below a simple and brief description is given on how to perform the migration.

Steps to transfer cPanel accounts

1. Change the $TTL of the zone in old server
2. Transfer the accounts.
3. Update the nameservers.
4. Change the A record of the zone file in old server

1. Change the $TTL of the zone in old server

Before one week of the scheduled transfer, all the $TTL values in the zone file must be changed to a smaller value between 30 minutes to 1 hour. This will take some time to propogate  to various ISPs around the world. The change in $TTL value ensures that the fresh zone files are loaded all around the world faster and that they access the old server for a shorter duration.

2. Transfer the accounts

Transfer the account using whm. If the size of the account is more than of 300 mb then move the folder which is of larger size to another directory outside that account. Then create a symbolic link for that folder in the original directory. After the transfer of the account using whm, scp the moved folder to the new server.

Also rsync the following directories between the two servers.

1. /var/cpanel
2. /usr/local/cpanel

3. Update the nameserver

Change the ip address of the child nameserver at the domain registrar. There will be a propogation delay of almost 48 hours.

4. Change the A record of the zone file in old server

For the time of propogation delay the domain keeps resoling to old server.  To make it resolve to new server, change the A record in the zone files of the old server.

Mobin Skariya linux cpanel server transfer, server migration steps

10 points to increase troubleshooting skills and become a good Server Admin

1) Be clear with the concepts

You will be learning lot of things in random in your day-to-day work, but essentially what you need to remember are the basic concepts of each technology you have come across, starting from basic commands, services associated, the applications related, tools etc. Before you enter the system admin scenario, join the popular discussion boards, mailing lists relating to your domain. Believe me, a lot of quick tips can be gathered just by reading what others in the business have to say.

2) Build your knowledgebase

Its always good habit to write down somewhere whatever you have learned new in your days work. It would definitely come in handy in the future, cos you might have got it after rigorous research and you need not do it a second time. My notes that I always keep have saved me plenty of time for many of the issues that creep up. Also be willing to ask your peers or seniors or in the forums when you find yourself stuck, cos experience is one thing you can never garner in a little time. Remember, you can revert the favor when they look for you.

3) Try to relate with the technologies

In my early days I have wasted plenty of hours trying to find a fix without understanding the cause, but that has changed. You have to keep in mind that there will be some relation with services or applications you are working with. So if something not working it might be that of some other service that is related to it. Knowing which is causing the problem is the measure of your troubleshooting skill. So think cleverly and identify the possible causes. Read more…

Shijil T S troubleshoot develop troubleshooting skills, troubleshooting tips

Sometimes you may get this error while you try to install php modules using pecl command. and you may get the error “pecl.php.net is using a unsupported protocal” .

In case you get this error, clear out the contents in /usr/local/lib/php/.channels and /usr/lib/php/.channels and run the command ‘pecl update-channels’ . That should fix the issue.

Prajath R linux pecl.php.net is using a unsupported protocol error

IMPORTANT CPANEL BACKEND FILES AND LOG FILES

/var/cpanel

accounting.log - Contains a list of accounting functions performed such as account removal and creation

cpanel.config – Tweak settings for whm can be done in this file

mainip – Main ip of the server is specified in this file

maxemail - Maximum emails per hour for a domain can be specified here The format is like the following domainname=number

Run the script /scripts/build_maxemails_config after editing this file This will create a file named after the corresponding domain name inside the directory maxemailsperdomain with the value specified in it.

Maxemailsperhour - Server wide maximum emails per hour can be set in this file. It applies to the whole domains in the server. You only need to insert the corresponding value in the file. A value of zero means unlimited.

Resellers-nameservers – This file gives you the name of the nameservers used by reseller users

resellers – This file lists the privileges of different reseller users

packages/ - This directory contains files for all the packages created under the WHM and the corresponding files will give all the details related to that package
Read more…

Tino Thomas linux cpanel, cpanel backend files, cpanel files, cpanel server, important log files, log, log files, whm