Month: June 2019

Attention Linux Users! Ubuntu Smartphones, Tablets And Smart Tvs

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In active Linux distributions, Ubuntu is undoubtedly the most popular and prestigious, mainly because it has managed to combine strength with an impressive ability to reach new users, who find in it a very simple platform to interpret, especially when migrating from Windows.

Furthermore, its semi-annual update program (April and October each year) plus the recent integration with their own services in the cloud, made him a proposal to take into account when deciding on a system to our PC, notebook or netbook.

The news is that, after several denials, the founder of Canonical (Ubuntu’s responsibility), Mark Shuttleworth, finally confirming the will to work on a version for smartphones, tablets and Smart TVs. The steps would be finished with the tasks to give stability to the LTS edition of version 12.04 (the update that will follow the current 11.10) and apply Unity tweaks to the interface, then put himself squarely with the development of this new proposal.

The decision is not for nothing. While the netbook craze (one of the main recipients of this distribution of Linux) is low, the sale of tablets and smart phone systems remains steadily rising, and are supposed to follow that path Smart TVs.

In this regard, Shuttleworth stated that “as people have moved from desktop computing to new forms, it is important for us to reach the community in these platforms.” So, Ubuntu could become a serious competitor to Android, also based on the Linux kernel, and now the ultimate free proposal for manufacturers who want to outsource the operating system that empowers their teams.

Turning to rumors, on the one hand there is already talk of dialogue between Canonical and ARM Holdings, whose architecture is one of the most popular in the development of processors for netbooks, to internalize over the details to consider in this adaptation. On the other hand, says the official announcement of the new proposal will be done during the Canonical Ubuntu Developer Conference, held in Orlando.

If this is confirmed, the market will definitely more interesting, but will have to be attentive to the acceptance of manufacturers, application developers and, above all, users. What do you say? Would he unseat Ubuntu to Android? And how applications will be handled?

What to do when data loss occurs in Linux due to corrupt File Descriptors

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In a Linux operating system based computer, directories, blocks, sockets, files, and other items are referred by their corresponding file descriptors. File descriptor is one of the significant data structures of Linux operating system. It is very essential for the file descriptor to be consistent for proper working of your system. In case it is damaged, you can not access your precious data from the disk and face severe data loss situations. In such cases, you need to opt for Linux data recovery solutions.

If you encounter any error from your system related to file descriptor corruption, it can be due to corruption to the Linux file system. File system corruption is a major reason of data loss and cause serious problems for you. For a practical instance of this problem with your Linux system, you may encounter the following error message when you attempt to access data from your Linux hard drive-

-Bad file descriptor-

The above error may also occur while booting your system or mounting a hard drive volume. It renders your precious data inaccessible. At this point, you need to find out the root of this problem and fix it using Linux Data Recovery solutions.

Grounds of the problem- You may encounter this behavior of Linux operating system due to any of the following reasons-

Linux uses /dev/null file that removes all data, which is written to the file after reporting that write process is completed successfully. You might encounter the file description problems if the file is deleted. If this error occurs while accessing any file from the hard drive, it can be due to corrupt disk blocks or file system corruption.

Resolution Try using the below methods to sort out this issue- To fix overwritten or deleted /dev/null file problems, you are required to replace the file with suitable iNode. Run fsck command on the affected Linux hard drive to resolve file system inconsistency and hard drive integrity issues. Before you run this command, file system must be un-mounted and system must be running in single-user mode.

Restore data from the most recent backup. It is an efficient Ext3 recovery solution to get your precious data back. If none of the above methods work, use third-party Data recovery Linux software to perform data recovery Linux. The applications are capable of retrieving your significant data in all data loss situations.

Linux Recovery Software to Recover Back Your Data for Any Instance of Hard Drive Crash

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Are you annoyed by the crashing of your Linux system regularly? The reason can be anything, including the infection of a deadly virus/malware, operating system malfunction, corruption/missing of data structure of your hard drive etc. Apart from these, there can be a number of reasons for which your Linux hard drive crashes almost every time, you boot the system leaving all your valuable data inaccessible. However, you need not have to ponder on how to recover back your lost/inaccessible data, just try any good Linux data recovery software and it can recover all your data for you safely.

You may encounter the below symptoms while encountering the crash of your Linux hard drive:

.Your Linux system fails to boot-up. .You are receiving a blank or a dark screen when trying to boot your Linux system. .The system is exceptionally slow and is taking a much longer boot time. .You are frequently encountering the rebooting of your Linux system and hangs frequently. .Getting an error message, such as: “No Fixed Disk Present” or “DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER”. .On start-up receiving error message, such as: “Operating system not found” or “Drive not formatted”. .There can be a number of possible causes, for which you are encountering the above mentioned situations of data loss or inaccessibility from your LINUX system. To name a few, below are some serious and complex causes behind hard drive crash: .Corrupted or damaged Master Boot record(MBR). .Deletion or missing of necessary system files. .Corruption to the superblock of the hard drive. .Corruption to the file system of the Linux hard drive. .Deadly boot sector virus or malware infection. .In all the above data loss situations, first of all, you can try repairing your operating system by running the operating system CD. However, if you do not get any positive result out of it, try the ‘fsck’ command-line utility, which is meant to locate any file system based errors and fix them.

In case, you are still unable to resolve the issue, you have to format the hard-drive and make a fresh installation of the operating system. As formatting will erase all the data from the Linux hard drive, you have to restore them from a valid backup. If backup is unavailable, you have to use any Linux drive recovery utility to bring the lost/formatted data.

Root Inode Corruption In Linux After Running Fsck On Mounted File System

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In Linux operating system, FSCK (File System Check) is a useful utility that allows you to examine the integrity and consistency of your Linux file system. The utility also offers you an alternative method to repair damaged file system and review the problems that have to be fixed on your file system. Though, this tool offers you with a number of advantages, running this command on the mounted Linux file system lead to file system corruption and data loss situations. In these cases, you need to go for Linux Data Recovery solutions to get your valuable data back.

In a practical situation, when you run FSCK command-line utility on an online Ext3 file system of Linux computer, you may come across the following error message:

EXT3-fs: corrupt root Inode, run e2fsck

After this error message, if you run e2fsck on same volume, you encounter below error message:

Root Inode is not a directory. Clear?

Above error message gives you two options to select from- Yes or No. If you select yes, it removes parent entry of each Inode in root directory and gives underwritten error message:

Missing ‘..’ in directory Inode

In these cases, you need to find out the cause root of the issue and then perform Data Recovery Linux by resolving it.

Cause

This issue occurs due to corruption to the file system, when you run FSCK tool on a mounted Linux file system. When above errors occur, you can not boot up your system and all of your precious data stored on Linux hard drive become inaccessible. If you need to run this file system consistency check utility, you should first unmount the file system.

Solution

In order to fix file system corruption issue, you need to replace damaged file system. It is possible through formatting the hard drive and reinstalling the operating system. Formatting resolves all of the disk related problems but also cause data loss and need Linux Recovery to be handled.

Recovery can easily be performed using third party Linux Data Recovery Software. The applications are able to handle most of the logical data loss situations. They thoroughly scan entire hard drive and extract all of the lost, missing and inaccessible data from it. Such recovery tools are easy and safe to use with simple user interface and non-destructive behavior.

Stellar Phoenix Linux Data Recovery is the most comprehensive tool to ensure absolute recovery in the majority of data loss situations. It recovers lost data from all major Linux distributions including Fedora Core, Red Hat, Ubuntu and SUSE. The software supports recovery from Ext4, Ext3, Ext2, FAT12, FAT16 and FAT32 file system volumes.

Installing Java1.6 and Tomcat 6.0 on Linux using WINSCP and Putty

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Installing Java 1.6 on Linux–Using WINSCP involves the following steps:

Step-1

Installing Java:

* Download jdk version–1.6x for Linux from Sun website

* Download the non-rpm version.

* Use WINSCP and connect to the server.

* Go to usr dir

* Right click and create a new directory–java

* Give all the read/write permission to the directory

* Move the download jdk from your local system to the java directory

Open putty connection to the server

#cd usr

Execute the command using putty:./jre-1.bin

/* optional

# mkdir -p /usr/local/java

# cd /usr/local/java

# mv /path/to/jdk-1_6_0_20-linux-x64.bin

# chmod u+x jdk-1_6_0_20-linux-x64.bin

# ./jdk-1_6_0_20-linux-x64.bin

*/

Step-2

* Set JAVA_HOME and PATH

* Set JAVA_HOME to the dir of java

* PATH to bin dir of JAVA_HOME

* Use–Putty to execute the below

* # export JAVA_HOME=/usr/java/jdk1.6.0_10

* # export PATH=$JAVA_HOME/bin:$PATH

Check if we have installed it:

# which java

/usr/java/jdk1.6.0_10/bin/java

# java -version

java version “1.6.0_10”

Java(TM) SE Runtime Environment (build 1.6.0_10-b33)

Java HotSpot(TM) 64-Bit Server VM (build 11.0-b15, mixed mode)

Installing Tomcat 6.0 on Linux–Using WINSCP involves the following steps:

Step-1

Download tomcat — Binary Core Distribution file –6.x to you local machine

* Rename the file as tomcat 6

* Use WINSCP and move to server /var/lib folder

* Create a new folder name as–tomcat6

* Give read write access permission to the folder

* Right click on the tomcat6.tar.gz and say extract

* In the dialogue box give tomcat 6

Step-2

Set CATALINA_HOME AND CATALINA_BASE

* # export JAVA_HOME=/usr/java/jdk1.6.0_20

* # export PATH=$JAVA_HOME/bin:$PATH

* # export CATALINA_HOME=/var/lib/tomcat6

* # export CATALINA_BASE=/var/lib/tomcat6

* # export JRE_HOME=/usr/java/jdk1.6.0_20

Step-3

Create a manager role with user name and password to deploy the application

* Use WINSCP to navigate to the folder-var/lib/tomcat6/conf

* Open tomcat-users.xml

* Copy that file to local machine and give the access.

start tomcat: #cd CATALINA_HOME/bin

#./startup.sh

shutdown tomcat:#cd CATALINA_HOME/bin

#./shutdown.sh

Test: www.myserver.com:8080/

The above url should give a tomcat default page.

www.myserver.com:8080/manager/html should prompt for a user name and password.

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