Thursday, 18 February 2016

Industrial Training

What more do you need other than getting a chance to polish your skills? Indulge in Linux World for a well-established base when it comes to professional IT. This organization will let you go to another level of academic horizon. The spelling of success will be registered in your dictionary for a long time. This will also make you achieve the best of what the field has to offer in Industrial Training for B. Tech. The knowledge that you gain can be applied in various modern computing industries and will let you explore the horizon. This training ends in a very short span of time, which will leave you with the rest of the time to enjoy your annual vacations.
If you are interested in diving in the pool of knowledge make sure, you have enrolled well in advance. The dates for the summer training are decided keeping in mind the closing date of all the colleges across India. The summer training program focuses on two main aspects that will improve and enhance your experience. They are:

·         Theoretical aspects:
The theoretical knowledge that you have gained in the past should be brushed up and updated. Without that there will be no chance for survival in the industry. This organization makes sure that you have the best of it.
·         Professionalism: 
A professional approach becomes necessary as it gives a chance for you to interact with all the basic possibilities that are necessary for one's sustainability.
The organization provides all the practical knowledge that one need to know when undergoing a training program.
What's more in the bag is that this offers a window for the students to interact with the real world. This will help them in hav9ing a better understanding of what the industry is like from within.
An in-depth knowledge is laid on current business rate and booming technology. This leaves the students to think and rethink on becoming a better technocrat in the future.
The institution plays a pivotal role in providing this. With organizations like Red Hat and Cisco, they have made it possible to tame the industry to their pace.
Make yourself sure of one thing that you have enrolled in an organization that believes in finesse of a subject. The result will be declared by your sustenance in the industry in the long run.

Friday, 25 December 2015

Best Purposes To Switch To Linux


 


1. It Doesn’t Crash

Linux has been time-proven to be a reliable working system. Despite the fact that the personal computer is not a brand new position for Linux, such a lot Linux-primarily based programs have been used as servers and embedded systems. High-visibility Web sites corresponding to Google use Linux-based totally techniques, however you can also to find Linux inside the TiVo set-best box in many livingrooms.
Linux has proved to be so dependable and secure that it is commonly found in devoted firewall and router systems utilized by high-profile companies to protected their networks. For more than ten years, it has no longer been uncommon for Linux systems to run for months or years with no need a single reboot.
2. Viruses Are Few and Some distance Among
Even though it’s conceivable to create a virulent disease to target Linux systems, the design of the system itself makes it very difficult to become infected. A single person may just cause local harm to his or her recordsdata by means of working a virus on his or her gadget; however, this may be an remoted instance somewhat than one thing could unfold out of control.
As well as, virtually all Linux companies be offering free on-line security updates. The overall philosophy of the Linux neighborhood has been to handle possible safety issues earlier than they develop into a problem moderately than hoping the susceptibility will move unnoticed.
3. Nearly Hardware-Unbiased
Linux was once designed and written to be easily moveable to other hardware. For the laptop person, because of this Linux has been and most probably at all times will be the first working system to take advantage of advances in hardware era comparable to AMD’s sixty four-bit processor chips.
4. Freedom of Selection
Linux provides freedom of choice as far as which producer you purchase the device from in addition to which application techniques you need to use. Being able to pick the manufacturer way you have a real choice as far as type of enhance you receive. Being open-supply software, new producers can input the marketplace to handle customer needs.

Number of software methods implies that you can choose the tools that perfect cope with your needs. For instance, three popular phrase processors are available. All three are loose and interoperate with Microsoft Phrase, but each and every offers unique advantages and disadvantages. The same is true of Web browsers.
5. Standards
Linux itself and lots of not unusual programs follow open standards. This means an replace on one system won’t make different programs obsolete.
6. Programs, Packages, Packages
Each Linux distribution comes with loads and possibly thousands of software systems included. This alone can prevent lots of dollars for each and every computer system you configure. Even though this can be a very small subset, imagine that the OpenOffice.org place of business suite is incorporated in addition to the GIMP, a software similar to (and many of us say more able than Adobe Photoshop); Scribus, a document structure software similar to Quark Xpress; Evolution, an e mail device similar to Microsoft’s Outlook Specific; and loads more.

For the more technically prone, development equipment, such as compilers for the C, C++, Ada, Fortran, Pascal and different languages, are integrated as well as Perl, PHP and Python interpreters. Editors and versioning gear are also included on this category.
Whether you might be looking for Instant Messaging clients, backup gear or Internet site construction applications, they most likely are all included within your base Linux distribution.
7. Interoperability
Increasingly computer systems are being hooked up to networks. No gadget could be complete if it didn’t come with equipment to allow it to interoperate with computer systems operating different working systems. Once once more, Linux could be very robust in this area.
Linux includes Samba, software that permits Linux to act as a client on a Microsoft Home windows-primarily based network. In fact, Samba includes server amenities such that that you must run a Linux system because the server for a gaggle of Linux and Home windows-based totally shopper systems.
In addition, Linux contains software to network with Apple networks and Novell’s Netware. NFS, the networking era developed on UNIX techniques also is included.
 

8. It is a Community Relationship, No longer a Consumer Relationship
Other working systems are the products of single vendors. Linux, then again, is brazenly advanced, and this technology is shared amongst vendors. This means you transform part of a community rather than a consumer of a single manufacturer. Additionally, the provider community easily can modify to the wishes of quite a lot of user communities reasonably than spouting a “one size suits all” philosophy.
This means you can select a Linux seller that appears to easiest deal with your wishes and really feel confident that it’s essential to transfer companies at a later time with out shedding your funding–both relating to prices and learning.
9. It’s No longer How Massive Your Processor Is…
As a result of a combination of the inner design of Linux and construction contributions from a various neighborhood, Linux tends to be more frugal in the usage of pc resources. This will likely take place itself in one personal computer system operating faster with Linux than with every other working gadget, however the advantages move a ways beyond that. It is imaginable, for instance, to configure a single Linux machine to act as a terminal server and then use outdated hardware as what are called thin clients.
This server/thin client configuration makes it imaginable for older, much less robust hardware to share the tools of an unmarried tough device thus extending the lifetime of older machines.

10. Linux Is Configurable
Linux is a real multi-consumer working system. Every person will have his or her own particular person configuration all on one computer. This includes the look of the desktop, what icons are displayed, what methods are began robotically whilst the person logs in and even what language the computer is in.
 
If anyone want to learn RHCE Training.Please visit on - LinuxWorld, Jaipur
 
 

Thursday, 5 November 2015

LVM Thing Provision

The concept of LVM Thin Provision is to create a new size of POOL other than Volume Group (VG) from where you can create very much larger size of Logical volume partition.
Here are few simple steps are given
============================
We can assume that we have an already created Volume Group of   size 5G
============================
Note:   For Your reference i am giving you the steps for creating volume group   for example we have a partition name /dev/sda6
=============================================================
[root@desktop80 Desktop]# pvcreate /dev/sda6
Physical volume “/dev/sda6” successfully created
[root@desktop80 Desktop]#
[root@desktop80 Desktop]# vgcreate tvg /dev/sda6
Volume group “tvg” successfully created
[root@desktop80 Desktop]#
[root@desktop80 Desktop]# vgs
VG   #PV #LV #SN Attr   VSize VFree
tvg   1   0   0 wz–n- 5.00g   5.00g
tvg1   1   3   0 wz–n- 5.00g 256.00m
vol0   1   4   1 wz–n- 73.22g 13.91g
Step 1:   Now we need to create   a ThinPooL
[root@desktop80 ftp]# lvcreate –size 4500M   –thin tvg/pooL1
Logical volume “pooL1” created
Step 2: Now you can create Much larger size partition than 4500M from PooL named pooL1
[root@desktop80 ftp]# lvcreate -V10G   –name LVMthn1 –thin tvg/pooL1
Logical volume “LVMthn1” created
Step 3:   You can format the partition
[root@desktop80 ftp]# mkfs.ext4   /dev/mapper/tvg-LVMthn1
mke2fs 1.41.12 (17-May-2010)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=16 blocks
655360 inodes, 2621440 blocks
131072 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2684354560
80 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632

Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 27 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
Step 4 : Now you can mount and Use LVM
[root@desktop80 ftp]# mkdir /media/LVM
[root@desktop80 ftp]# mount /dev/mapper/tvg-LVMthn1   /media/LVM
Important   : This is very much important to have real size in LVM pooL
————-
Note : We can also extend the size of LVM
==================================
############# LVM PooL extend ##############
[root@desktop80 ~]# lvextend –size +50M tvg/LVMthn1
Rounding size to boundary between physical extents: 52.00 MiB
Extending logical volume LVpooL to 4.74 GiB
Logical volume LVpooL successfully resized

Thursday, 17 September 2015

Creating and Restore Backup Using LVM snapshot

Lvm Snapshot is ultimate way for creating a backup of that data which is already present into LVM(Logical Volume Management) devices (LV)-Logical volume.
Example: 1. We have a already created LV(logical volume) from any VG
============
of 5GiB/GB size and have copied lots of data for example 4GB
Important :
==========
When you copy or store data it stores in two maners.
i) Data blocks (original data)
ii) metadata pointers (links and location address)
@@@@@@@@@@@@@@@@@@@@ THe concept of LVM SnapShot @@@@@@@@@
————————————————————
LVM Snapshot make a link to Original LV(Logical volume)
just like soft link of a file or directory which doesn’t required much size.
So if we have 5GB of LV(logical VOlume) then we can have its metadata upto 10-15% (50MB) and We can create LVM snapshot of 50MB
—————–
Practical :24 hours
—————–
Step 1:
=======
Mount your LV (logical volume) which you have already created then fill some data.
[root@desktop69 rhel6]# mount /dev/vgcheck/lvm1 /mnt/new
step 2:
=======
copy some data here
[root@desktop69 rhel6]# touch /mnt/new/abd{1..67}
[root@desktop69 rhel6]#cp -rvf /usr/ /mnt/new
Step3 :
======
Now take a snapshot of LVM
[root@desktop69 rhel6]#lvcreate -s –size 20M –name lvmsnapshot1 /dev/vgcheck/lvm1
check by using lvs or lvdisplay command
Note: Now you can mount it to access the stored data

Thursday, 20 August 2015

How to enable bash-completion in ubuntu 14.04

1. You need to reinstall bash-completion by using below command
learning@learning:~/Desktop$ sudo apt-get install –reinstall bash-completion
2. Now you need to write it in .bashrc file like below given at very last line
learning@learning:~/Desktop$ sudo vim /root/.bashrc
if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
. /etc/bash_completion
fi
 
Article Source - http://www.rhce.co.in/how-to-enable-bash-completion-in-ubuntu-14-04/

Saturday, 8 August 2015

RHCE Exam Objectives

RHCE exam candidates should be able to accomplish the following without assistance. These have been grouped into several categories.

System Configuration and Management

  • Route IP traffic and create static routes
  • Use iptables to implement packet filtering and configure network address translation (NAT)
  • Use /proc/sys and sysctl to modify and set kernel run-time parameters
  • Configure system to authenticate using Kerberos
  • Build a simple RPM that packages a single file
  • Configure a system as an iSCSI initiator that persistently mounts an iSCSI target
  • Produce and deliver reports on system utilization (processor, memory, disk, and network)
  • Use shell scripting to automate system maintenance tasks
  • Configure a system to log to a remote system
  • Configure a system to accept logging from a remote system

Network Services

Network services are an important subset of the exam objectives. RHCE candidates should be capable of meeting the following objectives for each of the network services listed below:
  • Install the packages needed to provide the service
  • Configure SELinux to support the service
  • Configure the service to start when the system is booted
  • Configure the service for basic operation
  • Configure host-based and user-based security for the service
RHCE candidates should also be capable of meeting the following objectives associated with specific services:

HTTP/HTTPS

  • Configure a virtual host
  • Configure private directories
  • Deploy a basic CGI application
  • Configure group-managed content

DNS

  • Configure a caching-only name server
  • Configure a caching-only name server to forward DNS queries
  • Note: Candidates are not expected to configure master or slave name servers

FTP

  • Configure anonymous-only download

NFS

  • Provide network shares to specific clients
  • Provide network shares suitable for group collaboration

SMB

  • Provide network shares to specific clients
  • Provide network shares suitable for group collaboration

SMTP

  • Configure a mail transfer agent (MTA) to accept inbound email from other systems
  • Configure an MTA to forward (relay) email through a smart host

 To know more about the RHCE Training in Jaipur. please visit on - LinuxWorld Informatics pvt. ltd

 

 

SSH

 

  • Configure key-based authentication
  • Configure additional options described in documentation                
Reference:

Thursday, 6 August 2015

Managing Partition in Linux using Parted

Parted is another utility  for managing  hard in linux based os

Step 1:-  To check number of partition  in a hard disk
======

[root@desktop12 ~]# parted  /dev/sda print  
Model: ATA ST3160812AS (scsi)
Disk /dev/sda: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  538MB   537MB   primary   ext4            boot
 2      538MB   79.2GB  78.6GB  primary                   lvm
 3      79.2GB  79.7GB  537MB   primary   linux-swap(v1)
 4      79.7GB  160GB   80.3GB  extended
 5      79.7GB  82.9GB  3221MB  logical
 6      82.9GB  137GB   53.7GB  logical
 7      137GB   137GB   105MB   logical   ext3
 8      137GB   137GB   524MB   logical   ext4
 9      137GB   138GB   524MB   logical   ext4
10      138GB   140GB   2147MB  logical   ext4
11      140GB   140GB   105MB   logical
12      140GB   140GB   41.9MB  logical
13      140GB   141GB   524MB   logical
14      141GB   143GB   2147MB  logical   ext4

OR
==

[root@desktop12 ~]# parted  /dev/sda 
GNU Parted 2.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Model: ATA ST3160812AS (scsi)
Disk /dev/sda: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  538MB   537MB   primary   ext4            boot
 2      538MB   79.2GB  78.6GB  primary                   lvm
 3      79.2GB  79.7GB  537MB   primary   linux-swap(v1)
 4      79.7GB  160GB   80.3GB  extended
 5      79.7GB  82.9GB  3221MB  logical
 6      82.9GB  137GB   53.7GB  logical
 7      137GB   137GB   105MB   logical   ext3

Step 2: To show create  a new  logical partition 
===================================================

Inside your  hard disk create partition of  2GB

(parted) mkpart  logical  143GB   145GB

Note: quit to exit from partition table

fire partx command to 
[root@desktop12 ~]# partx  -a /dev/sda

step 3: create file system  of desired format 
=============================================

[root@desktop12 ~]# mkfs.vfat   /dev/sda15

step 4: Now mount your partition 
=================================
[root@desktop12 ~]# mkdir  /media/kkk
[root@desktop12 ~]# mount  /dev/sda15  /media/kkk

Now you can save your data and can also made entry in /etc/fstab to make this partition persistance
 
Article Source - http://www.rhce.co.in/managing-partition-in-linux-using-parted/