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/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, ∼320🔥, 0💬

Cron Daemon, Table and Jobs
This section describes what is cron daemon and its related cron tables/jobs. 2022-10-01, ∼317🔥, 0💬

Postfix - Mail Transport Agent (MTA)
This chapter provides introductions and tutorial examples about Postfix - Mail Transport Agent (MTA). Topics include installing, configuring, and starting Postfix; testing Postfix using STMP commands with 'telnet'; turn on 'SMTP Submission' and 'SMTPS' services; using 'postconf' command. 2022-10-01, ∼316🔥, 0💬

"xz/unxz" - Compressed *.xz or *.lzma Files
This section provides a tutorial example on how to use 'xz' and 'unxz' commands to compress large files and restore them later. Compressed files will have the *.xz file name extension. 2022-10-01, ∼315🔥, 0💬

"df" - Display Free Space of File System
This section provides a tutorial example on how to use 'df' command to display free spaces of mounted file systems on Linux systems. 2022-10-01, ∼314🔥, 0💬

"ps" - Display Current Processes
This section provides a tutorial example on how to use 'ps' command to display current process on the system. 2022-10-01, ∼314🔥, 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, ∼314🔥, 0💬

Common Issues on Running Tomcat
This section provides some examples of issues on running Apache Tomcat on Linux systems. 2024-04-12, ∼313🔥, 0💬

Start/Stop Apache Tomcat
This section provides a tutorial example on how to start and stop Apache Tomcat on Linux systems. 2024-04-12, ∼310🔥, 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, ∼310🔥, 0💬

"sudo" Command and Privilege
This section provides a tutorial example on how to grant 'sudo' privilege to a user to allow him/her to run 'sudo' command to gain 'root' permission without login as 'root'. 2022-10-01, ∼309🔥, 0💬

"zip" and "unzip" - Create and Extract ZIP Files
This section provides a tutorial example on how to use 'zip' command to compress multiple file and sub-directories into a ZIP file and use 'unzip' command to extract files out of a ZIP file. 2022-10-01, ∼309🔥, 0💬

"du" - Display Disk Usage of Directories
This section provides a tutorial example on how to use 'du' command to display disk usage of any given directories on Linux systems. 2022-10-01, ∼308🔥, 0💬

What Is RPM
This section provides a quick introduction on RPM (RedHat Package Manager), which is a free and open packaging system on Red Hat Enterprise Linux as well as other Linux and UNIX systems. 2022-10-01, ∼307🔥, 0💬

Add Users and Groups Manually
This section provides a tutorial example on how to add users and groups manually on Linux computers. 2022-10-01, ∼307🔥, 0💬

"jobs" - Manage Background Jobs
This section provides a tutorial example on how to use 'jobs' command to display background jobs, which are processes with input detached the keyboard. You can start a background job by adding the 'ampersand' sign to the end of the commmad. 2022-10-01, ∼305🔥, 0💬

MySQL Server Data Backups on CentOS
This section provides a tutorial example on how to create backups of MySQL databases and load it back to another MySQL server for MySQL 8.0 server on CentOS 8 systems. 2022-10-01, ∼305🔥, 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, ∼304🔥, 0💬

vsftpd Server Configuration
This section provides a tutorial example on how to configure vsftpd server to allow some local users to upload and download files in their own private Directories with FTP client programs. 2024-01-03, ∼303🔥, 0💬

"tar -c" and "tar -x" - Create and Extract Archive Files
This section provides a tutorial example on how to use 'tar -c' command to compress multiple file and sub-directories into an archive file and use 'tar -x' command to extract files out of an archive file. 2022-10-01, ∼303🔥, 0💬

APT Configuration Settings and Overrides
This section provides a quick introduction of APT (Advanced Package Tool) configuration settings and overriding configuration files. 2025-12-29, ∼302🔥, 0💬

"apt list" - List Software Packages
This section provides a tutorial example on how to use the 'apt list' command to display software packages installed or available for Ubuntu computer. 2025-12-29, ∼301🔥, 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, ∼300🔥, 0💬

"wget" - Get Files from the Web
This section provides a tutorial example on how to use 'wget' command to download files from the Web. 'wget' can resume failed downloads. 2023-05-23, ∼299🔥, 0💬

<< < … 4 5 6 7 8 9 10 11 12 13 14 … > >>   ∑:379  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 REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO