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How to List Services in Linux

Details: Listing services using Netstat Command. Nestat command is a tool used for examining active network connections, interface statistics as well as the routing table.It's available in all Linux distributions and here we will check how to list services …

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How to Use Curl Command with Examples [Download Files]

Details: In this tutorial, we learn how to use curl command in linux. Expained with examples to download single and mutiple files from remote server.

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How to Setup Central Logging Server Using Rsyslog on

Details: List /var/log. Directory where different sorts of logs stored are: /var/log/syslog - Stores all startup messages, application startup messages etc. Practically stores all global system logs. /var/log/cron - The Cron jobs are basically kind of scheduled and automated task created in the system, that runs periodically and repeatedly. You can see what this logs directory would store.

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How to Configure LVM in Linux (pvcreate, lvcreate, vgcreate)

Details: Logical Volume Management (LVM) creates a layer of abstraction over physical storage, allowing you to create logical storage volumes. With LVM in place, you are not bothered with physical disk sizes because the hardware storage is hidden from the software so it can be resized and moved without stopping applications or unmounting file systems.

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How to Stop, Remove and Clean up Docker

Details: docker ps -a If you are done with the container and ready to delete it, run. docker rm [container id] Stopping a Docker container by name. Docker containers can also be stopped if the information you have is the image name and you want to find all matching running containers of that image name and stop them.

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How to Check a Server for TLS Support on Linux

Details: TLS is an acronym for Transport Layer Security. TLS facilitates secure communication between computers on the Internet. As of this writing, TLS 1.3 is the latest version. This tutorial explains how you can check which versions of TLS (1.2 or 1.3) your server or website supports from a Linux system, as well as the encryption algorithm (Cipher) that is being used.

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Learn Linux Route Add Command with Examples

Details: In this tutorial we learn how to add route in linux using route command examples. Mostly used to setup up static routes via gateway for networks or hosts.

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How to Extract (Open) a RAR File in Linux

Details: # rar a -r file1.rar file1 file2 file3 7. Set password for RAR file. While archiving, you can set a password (using -p option). If you omit the password on the command line, you will be prompted with a message “enter password” and the password is case sensitive.

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Detailed Understanding of Linux Inodes with Example

Details: Diagram of inode data structure 2. How to check inode in Linux. If you want to have a look at inodes, on any ext file system you can use below commands to check the properties of the file system and files that are used in it.

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How to Install Ruby on Rails on Ubuntu 20.04

Details: Ruby and Rails commonly known as "Rails" is an open-source web application framework.Ruby and Rails framework is written in Ruby programming language which helps you to create highly powerful websites and applications. Rails is a server-side web application framework that follows the MVC concept. In the previous article, we discussed Ruby installation on Ubuntu 20.04.

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How to Install Wine 6.0 on Ubuntu 20.04

Details: Learn here how to install Wine 6.0 on Ubuntu 20.04 using Wine repository. Then you can simply Install .exe programs using Wine.

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How to Remove All Files from a Directory in Linux

Details: In this tutorial, we are going to learn how to use rm command to remove all files safely from a directory. This document helps you delete non-hidden files, files with specific extensions, hidden files inside a directory.

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How to Create Python 3 Virtual Environment on Ubuntu 20.04

Details: Learn how to create Python 3 virtual environment on Ubuntu 20.04. Setup project inside virtual environment, install package, and run script.

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How to use XDMCP for Remote Desktop Access on Linux

Details: XDMCP (X Display Manager Control Protocol) is a protocol used to provide a mechanism for an autonomous display to request from a remote host. Using this protocol X11 display server (for example X.org) can connect and interact with another computer running X11.

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How to Use Terminator on Linux (Manage Multiple Terminal)

Details: This tutorial shows how to install and use terminator in Linux. Terminator is a terminal emulator which allows to create multiple terminals in a single window.

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How to Rename Files in Linux

Details: In this tutorial we will learn how to rename files in linux using the very basic commands. MV is the common command but to perform mutipe files we need different method.

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How to Install NumPy on Ubuntu 20.04

Details: Learn how to install NumPy on Ubuntu 20.04 using pip. NumPy is a python library used for scientific computing.

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How to Enable Colors for ls Command Output

Details: In this article, I am going to write about setting up colors for ls command output in your bash shell. In Linux, ls is one of the basic and most repeatedly used commands in our daily administration tasks to list the contents of a directory.

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How to Use Valgrind to Check Memory Leak

Details: Valgrind is a collection of command line tools that can be used for debugging and profiling executables in Linux. Memcheck is one of the most popular tool in the Valgrind suite of tools that can be used to detect memory-related errors in a program executable.

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Sudo Permission Denied with Redirect or Pipe [Solutions]

Details: Loved Reading by Many. 14 Command Line Tools to Check CPU Usage in Linux; How to List Mounted Drives on Linux; How to Give Root Privileges to a User in Linux

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What is DDOS Attack in Linux & How to Prevent

Details: Distributed Denial Of Service (DDOS) is an attempt to attack a host (victim) from multiple compromised machines to various networks. As a result, the targeted service running on the victim will get flooded with the connections from compromised networks and will not be able to handle it.

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Remove Tomcat from Linux Uninstall Tomcat Ubuntu

Details: #/usr/sbin/stoptomcat 2. To remove tomcat binaries and folders. Remove all occurence of tomcat binary files and folders from the below locations. #rm -f /usr/sbin/startomcat #rm -f /usr/sbin/stoptomcat #rm -Rf /usr/local/jakarta

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How to Install AppImage in Linux

Details: AppImage is format for packaging applications which is self-contained. It is the universal software package format compatible with various Linux distribution. In the traditional system of installing software packages, you need to download, extract and install on various directories of the system.But with the AppImage there is no extraction, no installation, no root permission, you just

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How to Install Nvidia Driver on Ubuntu 20.04

Details: After the Nvidia diver has been installed, we have to reboot the computer in order to allow Nvidia prime (which is the technology) to switch in between the Intel Graphics and the Nvidia Graphics card. $ sudo shutdown -r now Verify using nvidia-smi. The nvidia-smi command line is a utility that is used for providing monitor and management capabilities for each and every devices i.e Nvidia Tesla

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A Beginners Guide to Understand Makefiles in Linux

Details: As beginners, most of the C/C++ programmers compile their programs on Linux command line by running the gcc or g++ compiler commands. But, as their projects start to grow, compilation through a single command does not remain easy and effective.

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How to Install and Remove Packages using DNF

Details: Sample Output. 1 Last metadata expiration check: 1:22:04 ago on Sun 04 Feb 2018 02:36:58 PM UTC. 2 Installed Packages 3 GeoIP.x86_64 1.6.11-3.fc27 @anaconda 4 GeoIP-GeoLite-data.noarch 2017.10-1.fc27 @anaconda 5 acl.x86_64 2.2.52-18.fc27 @anaconda 6 apr.x86_64 1.6.3-1.fc27 @updates 7 apr-util.x86_64 1.6.1-2.fc27 @updates 8 audit.x86_64 2.7.8-1.fc27 @anaconda 9 …

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Lightweight Linux Distros for Old Laptop (2021)

Details: Minimum System Requirements. Pentium II or Celeron CPU with Physical Address Execution (PAE) 128 MB of Ram; 2 GB of hard drive; As the name suggests, Lubuntu is member of the popular Ubuntu family. It runs on LXDE desktop environment and as …

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How to Remove Symbolic Link in Linux with Example

Details: Symbolic links or Soft links work like pointers to another file. Note that there is only one copy of the actual file on the hard disk and in this way you can save valuable hard disk space by simply creating a link to it. Deleting a symbolic link is the same as removing a real file or directory.

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How to Install WordPress with Docker using Docker Compose

Details: 3. Install WordPress with docker. Finally, we will setup wordpress docker container by prepending following code snippets under services section.

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How to Add Ubuntu Host to Nagios Server using NRPE Plugin

Details: In our previous guide, we touched base on how to install the Nagios Monitoring Server on Ubuntu 20.04.For this second part, we will show you how to add a Ubuntu host to Nagios server for monitoring using NRPE plugin.. NRPE, short for Nagios Remote Plugin Executor, is an agent that allows remote execution of scripts located on the remote host.It allows the gathering of metrics such as …

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How to Upgrade a Single Package in Ubuntu

Details: On Ubuntu to install newer versions of the packages we run apt-get update followed by apt-get upgrade commands. This will update all installed packages which …

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Chown Command in Linux (Change File Ownership)

Details: $ ls -l -rw-r--r-- 1 tom developers 0 Apr 4 01:35 myfile.txt Change Ownership of a file. To change the ownership of a file, use chown with new owner name and the file name for which the owner has to be changed.

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How to Upload Files to S3 using Terraform

Details: In this tutorial, I am going to show you how to upload files from a laptop/PC to the AWS S3 bucket using terraform. Requirement. AWS account and Identity Access Management (IAM) user with a pair of access, secret key.

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Linux Command to Create, Format, Mount Filesystems

Details: A filesystem is an organization of data and metadata on the storage device. If you want to access any files in Unix like operating system, the filesystem has to be mounted where the file resides.

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3 Ways to Generate Fibonacci Sequence in Python

Details: Conclusion. In this tutorial, we learned 3 approaches to create Fibonacci sequence. In terms of space complexity, the first approach is the best as we don’t require any extra space related to the data structure.

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