Linux History Command Tutorial with Examples

Linux history is a function of the bash that provides previously issued commands with different options. In this tutorial we will look these options. Display History To simple list history providing history command is enough. History file is located in users home directory and named .bash_history for bash shell.



Dstat- Monitor Linux Server Performance

There are a lot of Linux server monitoring tools in the wild. They have strong and weak sides against others. To get more about Linux server monitoring dstat can be used. Features of dstat are joining information from tools like vmstat, netstat, mpstat, displaying statistics simultaneously, list ordering, exporting to...


Pip ffi.h Gcc Error

pip is a tool used to install Python modules from a central python repository. While using pip command there may be some error like ffi.h gcc .This error will look like below.

Install libffi-dev This problem is related to the libffi libraries. If libffi development libraries are not installed...


How To Get Runnig VM Ip Address in Kvm/Libvirt

There are times when we start virtual machine and want to get ip address quickly without open any GUI or connecting virtual machines console. Here is the tip. virsh domiflist Command

The magic is that virtual machines interfaces are listed than mac address is grepped. After grepping mac address...


10 Things To Do After Fedora Installation

Fedora is popular distribution among Linux community. I am already using Fedora too. I prefer Fedora because of its updated packages and virtualization support. If you are not using it please give a try. After installation, there are things to do in Fedora to make the user experience more smooth....


JavaScript “Uncaught TypeError: Cannot set property ‘…’ of null ” Error Solutions

While writing JavaScript beginners get a lot of Uncaught TypeError: Cannot set property ‘…’ of null error message so what is the problem with the code? Define Object During JavaScript Initialization Here is number one reason the object you try to access is not defined. It may define later. It is...


Python String Variable Type

String is a type used to hold text data in Python programming language. We can hold name, surname, address, text or similar data in strings. There are different functions those can be used with these string data. In this tutorial we will look them in detail. Define String Variable Defining...


How To Shuffle/Randomize Array in PHP

There are different ways to randomly select elements of an array in PHP. But recurring elements are biggest problem most of them. Here the clean and PHP library supported solution for this. We will use shuffle() function which will change the positions of the given array. Shuffle Example shuffle() function accept only...

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