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Verify Apache Web Server "httpd"
This section provides a tutorial example on how to manage Apache Web Server 'httpd' on CentOS 8 systems, and how to publish HTML documents and PHP scripts.. 2022-10-01, 117🔥, 0💬

"cURL" - Client for URL
This section provides a tutorial example on how to use 'cURL' command to send requests to a remote server in different protocols in URL format. 2023-05-24, 115🔥, 0💬

Web Server Certificate and Required Fields
This section provides information on how to obtain a Web server certificate and verify its required fields. An example of server certificate is also provided. 2024-04-12, 114🔥, 0💬

SquirrelMail - Webmail in PHP
This chapter provides introductions and tutorial on SquirrelMail Webmail. Topics include installing and configuring SquirrelMail on CentOS systems; accessing mail server on local network; accepting self-signed certificate; using secure IMAPS and SMTPS ports 993 and 465. 2023-06-14, 114🔥, 0💬

Layers of Memory and Access Speed
This section describes layers of memory: CPU Register, CPU Caches, RAM and hard disk. 2024-08-17, 113🔥, 0💬

smem - Process Memory Usage Report
This section provides a tutorial on how to install 'smem' and use it to report memory usage of each running process. 2024-08-17, 113🔥, 0💬

Apache Configuration for HTTPS Protocol
This section provides a tutorial example on how to install Web server certificates and configure Apache HTTP Server to support the HTTPS protocol. 2024-04-12, 113🔥, 0💬

List CPU Caches and Their Sizes
This section describes how to use 'lscpu', 'lshw' and 'dmidecode' commands to list CPU caches and their sizes. 2024-08-17, 112🔥, 0💬

Verify Cache Memory with "cp" Command
This section provides a tutorial example to verify the cache memory usage in the RAM free space using a single 'cp' command. 2024-08-17, 112🔥, 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, 112🔥, 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, 110🔥, 0💬

/proc/{id}/smaps - Process Memory Map Details
This section describes the pseudo file '/proc/{id}/smaps' that represents virtual memory map of a given process with detailed information on each mapped area. 2024-08-17, 110🔥, 0💬

Provide Self Signed Certificate to SquirrelMail
This section provides a tutorial example on how to provide download self-signed certificate from mail server and provide it SquirrelMail as a trusted certificate to resolve the invalid certificate error. 2023-05-27, 110🔥, 0💬

SquirrelMail Configuration on CentOS
This section provides a tutorial example on how to configure SquirrelMail on CentOS to integrate with localhost Postfix and Dovecot servers. 2023-05-27, 110🔥, 0💬

"who | w" - Logged-in Users and Their Running Commands
This section provides a tutorial example on how to display logged-in users and their running commands using 'who' and 'w' commands on Linux systems. 2024-08-17, 109🔥, 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, 109🔥, 0💬

"ps -o rss,drs,trs,vsz,sz" - Process Status Options
This section provides a tutorial on how to 'ps -o rss,drs,trs,vsz,sz' command to report memory usage of each running process. 2024-08-17, 109🔥, 0💬

SquirrelMail for Mail Server on Local Network
This section provides a tutorial example on how to configure a SquirrelMail Webmail site to access a remote mail server on the local network. 2023-06-01, 109🔥, 0💬

Memory Management
This chapter provides introductions and tutorial notes on memory management. Topics include memory layers and access speed; cache memory levels; virtual memory and physical memory mapping; page table; buffers, caches and swap spaces; memory usage reporting tools: free, ps, smem, pmap, /proc/meminfo,... 2024-08-17, 108🔥, 0💬

Virtual Memory vs. Physical Memory
This section describes virtual memory, which is mapped to physical memory through MMU (Memory Management Unit). 2024-08-17, 108🔥, 0💬

Buffer Memory and Cache Memory
This section describes buffer memory and cache memory, which are temporary memory allocations in the free RAM area to improve data input and output performance on hard disk. 2024-08-17, 108🔥, 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, 108🔥, 0💬

/proc/{id}/maps - Process Memory Map
This section describes the pseudo file '/proc/{id}/maps' that represents virtual memory map of a given process. 2024-08-17, 108🔥, 0💬

SquirrelMail Webmail Installation on CentOS
This section provides a tutorial example on how to install SquirrelMail on CentOS computers as a Web-based email client tool. 2023-05-29, 108🔥, 0💬

<< < … 5 6 7 8 9 10 11 12 13 > >>   ∑:297  Sort:Date

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 Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO