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Showing posts from July, 2018

Wired Networks Design - Lecture 3

How to Mount NTFS and exFAT Partition in RHEL CentOS

Mounting NTFS Mounting NTFS partition in CentOS/RHEL will need a simple trick. Here is the step.
$] sudo yum install epel-release

$] sudo yum install ntfs-3g
Suppose if the name of the device is /dev/sda3 and /dev/sda4, then here is the command to mount it from the terminal
$] sudo mkdir /mnt/WinE

$] sudo mkdir /mnt/WinD

$] sudo mount -t ntfs-3g /dev/sda3 /mnt/WinE  $] sudo mount -t ntfs-3g /dev/sda4 /mnt/WinDIf your windows OS is running with any updates or under hibernation, the above command will not work, Here is the solution for that. You can open the drives under read only mode.

if you get the error like shown above, here is the command

$] sudo mount -t ntfs-3g /dev/sda3 /mnt/WinE -ro o

$] sudo mount -t ntfs-3g /dev/sda4 /mnt/WinD -ro oNB: Sometimes you need not type "-t ntfs-3g", if the libraries are there, without this attribute also, the disk will be mounted.

Mounting exFAT file systemexFAT is another filesystem supported by the Unix families like (Mac OS). CentOS has a way …

How to access ext2, ext3 and ext4 filesystems in windows 10

Dual boot with Windows and Linux leads to the access of files in other Operating Systems. Viewing a windows partition on a Linux OS is not a big task. One can simply mount the OS and can see the files of windows within Linux.

But accessing Linux EXT2, EXT3 and EXT4 files within Windows can be done only through an external software.

EXt2FSD is a software that does this job. you can download the software from this link
Once installed, its as easy as possible to “assign a drive letter ” to the partition.  Figure below shows that.

Its just a simple process to access the linux files within windows. This is really helpful for the machines with UEFI partition. When Linux Boot loader is deleted, this will help to retrieve the files.
Any other info, please comment below.

How to enable Telnet and SSH in Mac OS

Enable Telnet
This post shows how to enable Telnet and SSH in Mac OS X.
To Enable Telnet, issue the following command (Open the Terminal and issue)
$] sudo launchctl load -w /System/Library/LaunchDaemons/telnet.plist
This will enable Telnet, and to check its working, try this
$] telnet localhost
To disable Telnet, issue the following command
$] sudo launchctl unload -w /System/Library/LaunchDaemons/telnet.plist
Enable SSH
To enable SSH, in the Mac OS X,
Open System Preferences -> Sharing -> Remote Login (Put the Tick Mark)

Once enabled, these machines can be connected remotely using their IP Addresses. Both these things works only when the port 22 and 23 are unblocked by the firewall
To check Telnet is working or not
$] telnet localhost
supply the username and password (you are connected..)

Big Blue Button – a Virtual Classroom Software

This article appears in “Open Source For You” Magazine in June 2015 Edition. Its a simple and easy tryout. If you are a startup and cannot afford for software cost, here you go, its completely free. There are some links to images which you cannot see, if you want to see those images, please purchase it online IntroductionBigBlueButton is a Voice Over IP (VOIP) based web conferencing software. This tool is helpful for remote learning, virtual classrooms, distance education, online learning, etc. Some of the features of BigBlueButton includes Record and Playback the entire sessionWhiteboard for lectures (Similar to a black board in a classroom)Desktop SharingIntegrated VOIP for listening and speakingPresentation (Any pdf or presentation file can be uploaded for teaching)Webcam can be shared between the usersPrivate and group chat (In case the teacher can chat with a student or the students and teachers can chat …

Change InnoDB file format to Barracuda

MySQL and MariaDB uses innoDB for storing the tables in a file format called Antelope.  For large sites, the Antelope format doesn't support more columns which makes the backup option a tedious process.
so it will be advised to change the file format to Barracuda. There are various options to do that. Here is a small workaround to change it to barracuda.

Open Mysql from the command prompt and execute the commands one by one

$] mysql -u root -p

The username is root here
It will ask for the password: (Input the password here).

mysql> select  version();
mysql> show variables like "%innodb_file%";

The output will be like this
| Variable_name            | Value    |
| innodb_file_format       | Antelope |
| innodb_file_format_check | ON       |
| innodb_file_format_max   | Antelope |
| innodb_file_per_table    | ON       |
4 rows in set (0.00 sec)

mysql> SET GLOBAL …

Importing Hot Potatoes Questions in MOODLE

This post helps you in understanding the concept of creating a quiz in MOODLE 3.2 and how to import questions created from Hot Potatoes software.

Hot potatoes is a software that creates questions for Matching, Objective Type and Fill in the blank options (Close Questions).

MOODLE is a learning management system that can hosts courses, student, teachers and so many other things.

This video shows how questions from Hot Potatoes software can be imported to MOODLE for handling the questions in a question bank.

Hot potatoes creates xml file type questions name .jqz .jcl, .jmt. (These are all xml files) which can be understood by MOODLE

Softwares needed
To download Moodle: Moodle 3.3+
To download Hot Potatoes: (There is a java version that can be used with any OS that has Java Virtual Machine)

To view the above method, please see the following video

The above video shows

how to import questions from Hot potatoeshow to create a quiz in MOODLEhow to handle the question bank.

Unboxing Huami Amazfit

This post helps to know the features of Huami Amazfit BIP, a Smart watch from the Xiaomi Sister concern Huami. Its a perfect watch for those who do regular exercise everyday.

Easily linked with Apple and Android Phones/TabletsGives notifications for calls, messages, appsdisplay time, notifications like number of walked steps, calories burnt and km walkedso many activities from cycling, running, walking, shuttle badminton, etc.It has DND feature, where you can disable/enable the DND (Do not Disturb) OptionIt has heart rate monitorWatch face can be changed with various images45 days battery life (but reduced lifetime for customisation)Gives you warning for Sitting for longer durationand there are so many benefits.Its cost $99 in the world market and in India it costs around 7K to 8KApp to connect: Mi Fit (iOS and Android) through bluetoothIP68 Water proof with GPSTechnical Specifications2.5D Corning Gorilla Glass screen
Press button to operate
Lithium-ion polymer battery thats las…

Review on Huami Amazfit BIP

By T S Pradeep Kumar