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Graphics Environments on Linux
This chapter provides introductions and tutorial examples about graphics environments. Topics include introduction to GNOME desktop; creating GNOME applications in Python; introduction to XQuartz X11 server; running Tk Python, Matplotlib Python scripts and Java GUI apps on GNOME desktop and X11 serv... 2022-10-01, ∼319🔥, 0💬

Listen to Non-Standard Ports with Apache
This section provides a tutorial example on how to add virtual hosts to listen to additional ports other than standard ports (80 and 443) with and without systemd Socket Activation service. 2024-04-12, ∼316🔥, 0💬

Configure OpenLDAP Server on CentOS
This section provides a tutorial example on how to configure OpenLDAP server on a CentOS 6 computer to build a simple local directory service. 2022-10-01, ∼314🔥, 0💬

Introduction to Conda Environment
This section provides a quick introduction about the Conda environment, its file directories and command programs. Steps to verify its Python version, and install new packages. 2022-10-01, ∼314🔥, 0💬

Install vsftpd on CentOS
This section provides a tutorial example on how to install, enable and start vsftpd (Very Secure FTP Daemon) on CentOS systems. 2024-01-01, ∼313🔥, 0💬

pmap - Process Memory Map
This section provides a tutorial on how to install 'smem' and use it to report memory usage of each running process. 2024-08-17, ∼312🔥, 0💬

vsftpd - Very Secure FTP Daemon
This chapter provides introductions and tutorial examples about 'vsftpd' - Very Secure FTP Daemon. Topics include installing vsftpd; configuring vsftpd for local user access; testing FTP access locally and remotely; enabling FTP over SSL/TLS to secure connections. 2022-10-01, ∼312🔥, 0💬

Install and Manage PHP Packages on CentOS
This section provides a tutorial example on how to install PHP 7.2 on CentOS 8 systems using 'dnf/yum' as the package manager. 2022-10-01, ∼312🔥, 0💬

What Is OpenLDAP
Describes what is OpenLDAP - an open source implementation of the LDAP (LightweightDirectory Access Protocol). 2022-10-01, ∼310🔥, 0💬

Administrative Tasks
This chapter provides introductions and tutorial on Linux administrative task. Topics include shutting down and restarting system, moving /home to new partition, moving all users to a new system. 2022-10-01, ∼310🔥, 0💬

"iptables" Command on CentOS
This section provides a tutorial example on how to use 'iptables' daemon CLI to manage network firewall on older CentOS systems. 2022-10-01, ∼309🔥, 0💬

Install and Manage Python Engine on CentOS
This section provides a tutorial example on how to install Python 3.6 on CentOS 8 systems using 'dnf/yum' as the package manager. 2022-10-01, ∼309🔥, 0💬

Files and Directories
This chapter provides introductions and tutorial on file and directory management. Topics include commands to search and find files, read text files in different ways, split, join and truncate files, compress and restore files, archive and extract filesm. 2022-10-01, ∼306🔥, 0💬

Disable SSH Access for FTP Users
This section provides a tutorial example on how to disable SSH login access of a user on CentOS systems and allow his/her to use FTP service only for upload and download files. 2024-01-03, ∼304🔥, 0💬

"gzip/gunzip" - Compressed *.gz Files
This section provides a tutorial example on how to use 'gzip' and 'gunzip' commands to compress large files and restore them later. Compressed files will have the *.gz file name extension. 2022-10-01, ∼304🔥, 0💬

Virtual Memory Mapping and Page Table
This section describes virtual memory page, physical memory frame, and page table that maps a page to a frame. 2024-08-17, ∼303🔥, 0💬

What Is Swap Space
This section describes swap space, reserved area on the hard disk that extends RAM to form a larger physical memory. 2024-08-17, ∼302🔥, 0💬

Test FTP Access Locally on CentOS
This section provides a tutorial example on how to use the 'ftp' client program to access the 'vsftpd' server locally on the same CentOS computer. 2024-01-01, ∼302🔥, 0💬

Introduction to Linux Systems
This chapter provides introductions and tutorial on Linux operating systems. Topics include 'uname' to display operating system information. 2022-10-01, ∼302🔥, 0💬

Conda - Environment and Package Manager
This chapter provides introductions and tutorial examples about Conda environments. Topics include installing Conda from the Miniconda package; starting/ending Conda 'base' environment; installing Conda packages. 2022-10-01, ∼301🔥, 0💬

Process Management
This chapter provides introductions and tutorial on managing processes on Linux systems. Topics include 'ps' to display processes; 'jobs' and other commands to manage background jobs; 'tmux' tool to manage multiple shells and keep them in background. 2022-10-01, ∼297🔥, 0💬

What Is Conda
This section provides a quick introduction on Conda, which is a powerful open source environment and packager manager that allows you to install multiple environments for multiple versions of software packages and their dependencies and switching easily between them. 2022-10-01, ∼297🔥, 0💬

Access Persmissions on "ntfs-3g" File System
This section provides a tutorial example on how to control access permissions on mounted Windows NTFS partitions with the 'ntfs-3g' device driver. 2022-10-01, ∼296🔥, 0💬

SELinux - Security-Enhanced Linux
This chapter provides introductions and tutorial on SELinux (Security-Enhanced Linux). Topics include introduction of SELinux basic concepts; User, Role, Domain, Type, Class, and Boolean; Type Enforcement policy rule syntax and database; making changes to SELiunx policy rules; using SELinux related ... 2022-10-01, ∼294🔥, 0💬

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Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO