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"split" and "cat" - Split and Join Files
This section provides a tutorial example on how to use 'split' command to split it into chunks and use 'cat' command to join chunks back into a single file.
2022-10-01, ∼176🔥, 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, ∼172🔥, 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, ∼171🔥, 0💬

Migrate Old Scripts to New PHP Release
This section provides a tutorial example on how to migrate old PHP scripts to PHP new releases.
2022-10-01, ∼171🔥, 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, ∼169🔥, 0💬

"apachectl status/start/stop" Commands
This section provides a tutorial example on how to use 'sudo apachectl *' commands to control the Apache HTTP Server, httpd.
2023-05-29, ∼169🔥, 0💬

First Java Program - Hello.java
This section provides a tutorial example on how to write, compile, and execute the first Java program, Hello.java, with OpenJDK.
2024-04-12, ∼167🔥, 0💬

GCC - C/C++ Compiler
This chapter provides introductions and tutorial examples about GCC C/C++ compilers. Topics include installing GCC C/C++ compilers; GCC compilation steps and settings; 'g++ -I' for include header files; g++ -l' for static/dynamic library files; 'g++ -shared' for building shared object (dynamic libra...
2022-10-01, ∼167🔥, 0💬

OpenJDK - Open-Source JDK
This chapter provides introductions and tutorial examples on OpenJDK. Topics include installing and upgrading OpenJDK JRE and JDK packages; using 'update-alternatives' command to update symbolic links for default commands; compiling and running Java programs.
2024-04-12, ∼166🔥, 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, ∼164🔥, 0💬

Reset Host Name on Linux Systems
This section provides a tutorial example on how to view and change host name settings on Linux systems.
2023-05-27, ∼164🔥, 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, ∼163🔥, 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, ∼163🔥, 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, ∼162🔥, 0💬

Running Apache Tomcat on Linux Systems
This chapter provides introductions and tutorial on Apache Tomcat server for Linux systems. Topics include installing Apache Tomcat; starting/stopping Tomcat; opening firewall for port 80; configuring SSL/TLS for HTTPS connections.
2024-04-12, ∼160🔥, 0💬

SquirrelMail Configuration for IMAPS Port 993
This section provides a tutorial example on how to configure a SquirrelMail Webmail site to use the secure IMAPS port 993 to retrieve emails from a mail server on the local network.
2023-05-27, ∼160🔥, 0💬

SquirrelMail Configuration for QQ Mail
This section provides a tutorial example on how to clone and configure a SquirrelMail Webmail site to access QQ mail server with secure protocols: IMAPS and SMTPS.
2023-05-27, ∼160🔥, 0💬

Common Issues on Running Tomcat
This section provides some examples of issues on running Apache Tomcat on Linux systems.
2024-04-12, ∼155🔥, 0💬

Setup FTP Sub-Directory for Local Users
This section provides a tutorial example on how to setup 'ftp' sub-directory for local users and allow them upload and download files using vsftpd on CentOS systems.
2024-01-03, ∼154🔥, 0💬

What Is Apache Tomcat
This section provides a quick introduction of Apache Tomcat, a Java application server, or as a Java servlet container.
2024-04-12, ∼153🔥, 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, ∼153🔥, 0💬

Install Apache Tomcat on Linux
This section provides a tutorial example on how to install Apache Tomcat on Linux systems.
2024-04-12, ∼152🔥, 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, ∼150🔥, 0💬

Thunderbird Installation on macOS
This section provides a tutorial example on how to install Thunderbird on macOS computers as an email client tool, also called MUA (Mail User Agent).
2022-10-01, ∼144🔥, 0💬

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