IP Masquerading in Linux

By | 2018-06-12T07:30:42+00:00 January 5th, 2017|

IP Masquerade is a networking function in Linux similar to the one-to-many NAT (Network Address Translation) servers found in many commercial firewalls and network routers. IP Masquerade, also called IPMASQ or MASQ, allows one or more computers in a network without assigned IP addresses to communicate with the Internet using Linux server's assigned IP address. [...]

All about Linux Process Scheduling And Multitasking

By | 2018-08-16T01:47:11+00:00 January 5th, 2017|

Modern computer systems range from low-end processors that can only execute one single instruction at a time to high-performing supercomputers with hundreds of CPUs each and multiple cores on each CPU, performing hundreds of instructions in parallel.  All of these systems tend to have one thing in common: They always need to run more processes [...]

Task Scheduling In Linux Command Line

By | 2018-08-28T18:10:46+00:00 January 5th, 2017|

In this tutorial we can learn how to schedule tasks via the Linux Command line Scheduling one-time tasks with at One solution available to users of a Linux system for scheduling future tasks is at. This not a standalone tool, but rather a system daemon (atd), with a set of command-line tools to interact with [...]

Linux Network Address Translation (NAT)

By | 2017-01-05T16:25:59+00:00 January 5th, 2017|

Firewalld supports two types of Network Address translation(NAT): masquerading and port forwarding. Both can be configured on a basic level with regular firewall-cmd rules, and more advanced forwarding configurations can be accomplished with rich rules. Both forms of NAT modify certain aspects of a packet, like the source or destination, before sending it on.   [...]

Managing Swap Space in Linux

By | 2018-06-08T08:01:24+00:00 January 5th, 2017|

A swap space is an area of a disk which can be used with the Linux kernel memory management subsystem. Swap spaces are used to supplement the system RAM by holding inactive pages of memory. The combined system RAM plus swap space is called virtual memory. When the memory usage in a system exceeds a [...]

Linux pinfo command usage with examples

By | 2016-12-23T12:20:04+00:00 December 23rd, 2016|

Pinfo is an info file viewer or a program for viewing info files. The man pages have a formal format useful as a command reference, but less useful as general documentation. For such documents, The GNU Project developed a different online documentation system, known as GNU info. Info documents are an important resource on Linux [...]

About Linux Access Control List ( ACL )

By | 2018-08-28T17:30:32+00:00 December 23rd, 2016|

Standard Linux file permissions are satisfactory for most situations, but they have limitations. Permissions restricting access to a file are limited to the file owner, membership of a single group, or everyone else. It may not be appropriate for the process (a running program) to be a member of the file’s owning group, and even [...]

Apache HTTPD Web Server – Details and Installation

By | 2016-12-23T12:17:31+00:00 December 23rd, 2016|

Apache HTTPD is one of the most used web servers on the Internet. Apache HTTP Server is a free software/open source web server for Unix-like systems and other operating systems. A web server is a daemon that speaks the http(s) protocol, a text-based protocol for sending and receiving objects over a network connection. The http [...]

How to unlock a container in OpenVZ

By | 2016-12-13T11:36:31+00:00 December 13th, 2016|

In this tutorial we can check how to unlock a container in OpenVZ OpenVZ OpenVZ is an operating system-level virtualization technology for Linux. It allows Multiple isolated operating system instances, called containers/Virtual Private Servers(VPS)/Virtual Environments(VE) to run on a single physical server.   Action Scripts There might be some situations when you need to perform additional [...]

Install MariaDB in Linux Server

By | 2018-08-07T14:54:13+00:00 December 13th, 2016|

In this tutorial, we can learn how to install MariaDB in a Linux Server. A relational database is a mechanism that allows the persistence of a data in an organize way. Databases store data items, organize as a set of tables with each table representing an entity. There are two types of relational database packages. [...]

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