Published on : July 8, 2019 by Ruben Roy
A port is an addressable network location implemented in an operating system to help differentiate traffic destined for different services or Applications. The state of a port is either open, filtered, closed, or unfiltered. A port is said to be open if an application on the target machine is listening for connections/packets on that port. […]
Published on : April 6, 2019 by Anitta Jose
Pipe is a method for Inter Process Communication (IPC) which send output of one process to another process. As you know, pipes are of two types: Unnamed Pipes Named Pipes Unnamed Pipe An example of unnamed pipe is as follows: $ ls | wc -l Here output of first command is given as an input […]
Published on : January 14, 2019 by Daniel Wren
Swap space in Linux is used when the amount of physical memory (RAM) is full. If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space. Swap space is located on hard drives, which have a slower access time than physical memory and is […]
Published on : June 26, 2017 by Anitta Jose
Sed – The Stream Editor A stream editor is used to perform basic text transformations on an input file. Sed command is mainly used to replace the text in a file. But it is a powerful text processing tool. Some uses of sed command are explained below with examples: Consider the text file “test” as […]
Published on : June 6, 2017 by Liya Gigi
As we know, du command is used to check the disk usage of files and folders under Linux system. There are a lot of switches available for du among which here I am trying to explain the most common switches used. As you know, one can easily checks the switches available for du by looking […]
