August 2018 – POFTUT

Monthly Archive: August 2018


What Is POSIX (Portable Operating System Interface) and It’s Relation with Linux?

What is POSIX? We hear this term in Linux and Unix world but do not understand the meaning of POSIX. POSIX is the short form of Portable Operating System Interface . Lets start explaining everything about the POSIX. IEEE POSIX Standard POSIX is a standard developed for Unix operating systems. At the old times Unix has a lot od different implementations. This was creating problems about portability. One application developed for...


Windows Update Service Not Running Error for Windows 7, Windows 8, Windows 10, Windows Server 2008, 2012, 2016

Windows Update Service provides the package and security updates for the operating system Windows 7, Windows 8, Windows 10, Windows Server 2008, Windows Server 2012, Windows Server 2016. As stated it is a service which runs on background. In some cases windows update service may not work or start properly. Windows Update Service Not Running Error This error screenshot may change from Windows Operating system versions but the effect is...


Debian Releases and Names

Debian is old and mature Linux distribution. Debian uses versions in order to distinguish. In this tutorial we will learn and list Debian Releases and Names. Version Names Debian  provides different releases as versions. There are version, code name. Version is the numerical presentation of the Debian release. Code Name is the name of the release which is more human friendly. This code names are chosen from the movie named Toy Story ....


What is IP Address or Localhost In Computer Network?

IP addresses are used to specify the hosts in a numeric way. There are different type of IP addresses in Computer networks. One of them is which seems a bit confusing. is a special purpose IPv4 address. This address is asssigned to the local system and can not be used by other systems. is mainly designed to test local system network protocols. We can ping like other IP...


What Is sleep() function and How To Use It In C Program?

C programming language provides slepp() function in order to wait current thread for specified time. slepp() function will sleep given thread specified time for the current executable. Of course the CPU and other processes will run without problem. Include unistd.h Library In Linux sleep() function is provided by unistd.h library which is short cut of unix standard library. We can include this library like below.

Include windows.h Library In Windows If we are...


HTTP 403 Forbidden Status Code and Fix Error

HTTP protocol uses HTTP status codes in order to provide information about the requests. There are different type of status codes like 100, 200, 300, 400 etc. All of them have different meaning and subcodes like 403. In this tutorial we will examine the 403 Forbidden Error Code . Example Response Here is some example response about HTTP 403 Forbidden. This code is compatible with all major browsers.

AND other...


Error: Permission denied (publickey) and Solution

ssh or similar applications use Public and Private Key mechanism in order to authenticate and authorize given users. We have all ready examined Key based authentication and authorization in previous tutorials. Permission denied(public key) error is generally occurs for can not reading Public and Private key properly to authenticate to remove server. In this tutorial we will learn general causes and solutions. Troubleshooting We will start with a simple troubleshooting. When...


Linux Bash exit and Exit Codes

Linux bash shell provide simple but useful programming environment. We can write simple applications, scripts which will run commands, redirect input and outputs and create, stop process. After the execution of the script or function we may need to provide some information to script caller. exit keyword is used to end given script with useful information. In this tutorial we will examine different use cases with exit and send exit status to...


How To Create New User and Set, Grant Permissions To User In MySQL and MariaDB?

MySQL provides ability to create and users from its shell. Security is important part of the database servers. In this tutorial we will examine how to create users and manage privileges in MySQL database server. We will specifically learn restrict user access to a database, database server, grant different type of privileges, print these privileges. Login To MySQL Shell In order to create user and manage privileges of this user...

How To Redirect HTML Web Page Into Another URL? 1

How To Redirect HTML Web Page Into Another URL?

HTML is a language used to build web pages. Web pages have a dynamic nature where it can change during time. One of the most popular change cases is redirecting given web page to another web page. This is simply called we page redirect. In this tutorial, we will examine the redirect process in different ways, languages, and technologies. HTML Redirect The most popular and basic for web page redirect...

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