Linux

To check which all ports are listening (Introducing Four Linux Commands)

Tags: Linux

Published on : July 8, 2019 by

To check which all ports are listening (Introducing Four Linux Commands)

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. […]

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Use and examples of Named Pipes

Tags: Linux

Published on : April 6, 2019 by

Use and examples of Named Pipes

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 […]

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Everything about SWAP in Linux – why do we need swapping ?

Tags: LinuxServer Management

Published on : January 14, 2019 by

Everything about SWAP in Linux – why do we need swapping ?

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 […]

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“SED” Options and its usage

Tags: Linuxpattern matchingsedstream editor

Published on : June 26, 2017 by

“SED”  Options and its usage

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 […]

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Some useful switches for “du – disk usage”

Tags: directorydisk usagedufilesLinux

Published on : June 6, 2017 by

Some useful switches for “du – disk usage”

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 […]

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