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Linux Certifications

Linux Foundation Certified IT Associate (LFCA)

Linux Foundation Certified IT Associate (LFCA)

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The Linux Foundation Certified IT Associate (LFCA) is an entry-level certification offered by the Linux Foundation. It targets beginners or professionals in the IT field seeking to upskill and get a better understanding of

Load and Unload Kernel Modules

How to Load and Unload Kernel Modules in Linux

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A kernel module is a program which can loaded into or unloaded from the kernel upon demand, without necessarily recompiling it (the kernel) or rebooting the system, and is intended to enhance the functionality

SELinux and AppArmor Security Hardening Linux

Implementing Mandatory Access Control with SELinux or AppArmor in Linux

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To overcome the limitations of and to increase the security mechanisms provided by standard ugo/rwx permissions and access control lists, the United States National Security Agency (NSA) devised a flexible Mandatory Access Control (MAC)

Perf - A Performance Monitoring and Analysis Tool for Linux

Perf- A Performance Monitoring and Analysis Tool for Linux

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When we talk of performance in computing, we refer to the relationship between our resources and the tasks that they allows us to complete in a given period of time. In a day of

Setup Recursive Caching DNS Server and Create DNS Zones

Setup a Basic Recursive Caching DNS Server and Configure Zones for Domain

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Imagine what it would be like if we had to remember the IP addresses of all the websites that we use on a daily basis. Even if we had a prodigious memory, the process

Setup FTP Anonymous Logins

An Ultimate Guide to Setting Up FTP Server to Allow Anonymous Logins

14 Comments

In a day where massive remote storage is rather common, it may be strange to talk about sharing files using FTP (File Transfer Protocol). However, it is still used for file exchange where security

Run Linux Commands in Windows Using Cygwin

How to Install Cygwin, a Linux-like Commandline Environment for Windows

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During the last Microsoft Build Developer Conference held from March 30th to April 1st, Microsoft released an announcement and gave a presentation that surprised the industry: beginning with Windows 10 update #14136, it would

Set Access Control Lists (ACL's) and Disk Quotas for Users and Groups

How to Set Access Control Lists (ACL’s) and Disk Quotas for Users and Groups

15 Comments

Access Control Lists (also known as ACLs) are a feature of the Linux kernel that allows to define more fine-grained access rights for files and directories than those specified by regular ugo/rwx permissions. For

Set or Modify Linux Kernel Runtime Parameters

How to Change Kernel Runtime Parameters in a Persistent and Non-Persistent Way

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In Part 13 of this LFCS (Linux Foundation Certified Sysadmin) series we explained how to use GRUB to modify the behavior of the system by passing options to the kernel for the ongoing boot

Linux Process Monitoring and Set Process Limits Per User

LFCS: Monitor Linux Processes Resource Usage and Set Process Limits on a Per-User Basis – Part 14

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Due to recent modifications in the LFCS certification exam objectives effective from February 2nd, 2016, we are adding the needed articles to the LFCS series published here. To prepare for this exam, you are

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A Beginners Guide To Learn Linux for Free [with Examples]
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Learn Linux Commands and Tools

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Linux Server Monitoring Tools

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ngxtop – Monitor Nginx Log Files in Real Time in Linux

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How to Install Zabbix Agent and Add Windows Host to Zabbix Monitoring – Part 4

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Learn Linux Tricks & Tips

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Let Sudo Insult You When You Enter Incorrect Password

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8 Best PDF Document Viewers for Linux Systems

6 Best CCleaner Alternatives for Ubuntu

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