<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
 <title>Herong's Tutorial Examples</title>
 <subtitle>Free tutorial books on programming, information technology, Chinese language, and other topics by Herong Yang</subtitle>
 <link rel="self" href="https://www.herongyang.com/atom_xml.php"/>
 <id>https://www.herongyang.com/atom_xml.php</id>
 <updated>2026-05-15T23:03:15+02:00</updated>
 <author>
  <name>Herong Yang</name>
 </author>
 <rights>Copyright (c) 2026 Herong Yang</rights>
 <category term="Programming"/>
 <category term="Technology"/>
 <category term="Chinese"/> <entry>
  <title>Linux Trust Store for CA Certificates</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-for-CA-Certificates.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-for-CA-Certificates.html</id>
  <updated>2026-05-12T00:01:27+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This chapter provides tutorial notes and example codes on Linux Trust Store. Topics include directory and files of Linux Trust Store; 'trust' command to list, search, extract certificates in Linux Trust Store.  - Rank: 127; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-for-CA-Certificates.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>PKI Certificate in OpenSSL PEM Format</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/File-Formats-PKI-Certificate-in-OpenSSL-PEM.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/File-Formats-PKI-Certificate-in-OpenSSL-PEM.html</id>
  <updated>2026-05-12T00:01:26+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the PEM (Privacy Enhanced Mail) file format to store PKI certificates.  - Rank: 126; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/File-Formats-PKI-Certificate-in-OpenSSL-PEM.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>What Is ca-certificates-java Package</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-java-Package-What-Is.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-java-Package-What-Is.html</id>
  <updated>2026-05-12T00:01:36+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the 'ca-certificates-java' package, which installs trusted root CA certificates in JKS format supporting Java applications.  - Rank: 116; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-java-Package-What-Is.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"trust dump" - Dump Information from Linux Trust Store</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-dump.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-dump.html</id>
  <updated>2026-05-12T00:01:32+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides tutorial examples on dumping certificate information from Linux Trust Store using the 'trust dump' command.  - Rank: 114; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-dump.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"trust anchor" - Add and Remove Certificates.</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-anchor.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-anchor.html</id>
  <updated>2026-05-12T00:01:33+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides tutorial examples on adding and removing certificate information in Linux Trust Store using the 'trust anchor' command.  - Rank: 114; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-anchor.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>What Is ca-certificates-mono Package</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-mono-Package-What-Is.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-mono-Package-What-Is.html</id>
  <updated>2026-05-12T00:01:37+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the 'ca-certificates-mono' package, which installs trusted root CA certificates in JKS format supporting Java applications.  - Rank: 114; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-mono-Package-What-Is.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-trust" vs "trust" on Red Hat Computers</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-vs-trust-Commands.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-vs-trust-Commands.html</id>
  <updated>2026-05-12T00:00:07+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the differences between 'update-ca-trust' and 'trust' commands on Red Hat-based computers.  - Rank: 114; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-vs-trust-Commands.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>ca-certificates - Linux CA Certificate Package</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package.html</id>
  <updated>2026-05-12T00:01:34+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This chapter provides tutorial notes and example codes on the Linux CA Certificate Package. Topics include installing Mozilla trust root certificates with the 'ca-certificates' package; installing 'ca-certificates-java' and 'ca-certificates-mono' for Java and Mono (.NET) applications; adding and rem...  - Rank: 113; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>What Is ca-certificates Package</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package-What-Is.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package-What-Is.html</id>
  <updated>2026-05-12T00:01:35+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the 'ca-certificates' package, which installs trusted root CA certificates supporting SSL/TLS applications.  - Rank: 113; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Package-What-Is.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-certificates" to Add CA Certificate</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Add-CA-Certificate.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Add-CA-Certificate.html</id>
  <updated>2026-05-12T00:01:38+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides a tutorial example on how to use the update-ca-certificates Command to add a new root CA certificate to the trust store on Linux systems.  - Rank: 113; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Add-CA-Certificate.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-certificates" vs "trust" on Debian/Ubuntu Computers</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-update-ca-certificates-vs-trust-Commands.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-update-ca-certificates-vs-trust-Commands.html</id>
  <updated>2026-05-12T00:00:00+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the differences between 'update-ca-certificates' and 'trust' commands on Debian/Ubuntu computers.  - Rank: 113; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-update-ca-certificates-vs-trust-Commands.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>update-ca-trust Command on Red Hat Computers</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Command.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Command.html</id>
  <updated>2026-05-12T00:00:01+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This chapter provides tutorial notes and example codes on the 'update-ca-trust' command Red Hat computers. Topics include directory structure of the Trust Store; adding or disabling CA certificates.  - Rank: 113; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Command.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>Directory and Files of Linux Trust Store</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-directory-file.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-directory-file.html</id>
  <updated>2026-05-12T00:01:28+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides tutorial examples on extracting certificates from Linux Trust Store using the 'trust extract' command.  - Rank: 112; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-directory-file.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"trust" Command to Manage Linux Trust Store</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-Manager-trust-Command.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-Manager-trust-Command.html</id>
  <updated>2026-05-12T00:01:29+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the 'trust' command from the 'p11-kit' package to manage the Linux Trust Store.  - Rank: 112; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-Manager-trust-Command.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>What Is update-ca-trust Command</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-What-Is.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-What-Is.html</id>
  <updated>2026-05-12T00:00:02+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes what is 'update-ca-trust' - a system command to maintain certificate Trust Store on Red Hat-based (RHEL, CentOS, and Fedora) computers.  - Rank: 112; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-What-Is.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-trust" to Add CA Certificate</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Add-CA-Certificate.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Add-CA-Certificate.html</id>
  <updated>2026-05-12T00:00:04+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides a tutorial example on adding new CA certificates to Trust Store using the 'update-ca-trust' command on Red Hat-based computers.  - Rank: 112; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Add-CA-Certificate.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-trust" to Remove CA Certificate</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Remove-CA-Certificate.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Remove-CA-Certificate.html</id>
  <updated>2026-05-12T00:00:05+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides a tutorial example on removing user added CA certificates from Trust Store using the 'update-ca-trust' command on Red Hat-based computers.  - Rank: 112; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Remove-CA-Certificate.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"trust list" - Search Certificates in Linux Trust Store</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-list.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-list.html</id>
  <updated>2026-05-12T00:01:30+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides tutorial examples on searching certificates in Linux Trust Store using the 'trust list' command.  - Rank: 111; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-list.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-certificates" to Disable CA Certificate</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Disable-CA-Certificate.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Disable-CA-Certificate.html</id>
  <updated>2026-05-12T00:01:39+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides a tutorial example on how to use the update-ca-certificates Command to disable an existing root CA certificate in the trust store on Linux systems.  - Rank: 111; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-ca-certificates-Disable-CA-Certificate.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>/etc/pki/ Directory and Symbolic Links</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-etc-pki-Directory-and-Symbolic-Links.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-etc-pki-Directory-and-Symbolic-Links.html</id>
  <updated>2026-05-12T00:00:03+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section describes the /etc/pki/ directory holding CA certificates in different formats for different types of applications.  - Rank: 111; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-etc-pki-Directory-and-Symbolic-Links.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"trust extract" - Extract Certificates from Linux Trust Store</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-extract.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-extract.html</id>
  <updated>2026-05-12T00:01:31+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides tutorial examples on extracting certificates from Linux Trust Store using the 'trust extract' command.  - Rank: 110; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Linux-Trust-Store-trust-extract.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>"update-ca-trust" to Distrust CA Certificate</title>
  <link rel="alternate" href="https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Distrust-CA-Certificate.html"/>
  <id>https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Distrust-CA-Certificate.html</id>
  <updated>2026-05-12T00:00:06+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com/z/_icon_PKI.png' />This section provides a tutorial example on removing user added CA certificates from Trust Store using the 'update-ca-trust' command on Red Hat-based computers.  - Rank: 110; Updated: 2026-05-12 00:00:00 -> &lt;a href='https://www.herongyang.com/PKI-Certificate/Red-Hat-update-ca-trust-Distrust-CA-Certificate.html'>Source&lt;/a></summary>
  <author>
   <name>Herong</name>
  </author>
  <category term="PKI"/>
 </entry> <entry>
  <title>Lucky Wedding Dates: 2096 - Year of the Dragon</title>
  <link rel="alternate" href="https://www.herongyang.com/1000413_Lucky_Wedding_Dates_2096-Year_of_the_Dragon.html"/>
  <id>https://www.herongyang.com/1000413_Lucky_Wedding_Dates_2096-Year_of_the_Dragon.html</id>
  <updated>2026-05-07T14:29:11+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com//Chinese/Wedding/_icon_Wedding.png' />Where to find lucky wedding dates for year 2096? Lucky Wedding Dates: 2096 - Year of the Dragon   ⇒ Lucky Wedding Dates: 2097 - Year of the Snake ⇐ Lucky Wedding Dates: 2095 - Year of the Rabbit ⇑ Lucky Wedding Dates: 2091 - 2100 ⇑⇑ Wedding Date - The Most Important Date of Your Life  - Rank: 897; Updated: 2026-05-07 14:28:58 -> &lt;a href='https://www.herongyang.com/1000413_Lucky_Wedding_Dates_2096-Year_of_the_Dragon.html'>Source&lt;/a></summary>
  <author>
   <name>HerongYang.com</name>
  </author>
  <category term="Chinese"/>
 </entry> <entry>
  <title>Lucky Wedding Dates: 2095 - Year of the Rabbit</title>
  <link rel="alternate" href="https://www.herongyang.com/1000412_Lucky_Wedding_Dates_2095-Year_of_the_Rabbit.html"/>
  <id>https://www.herongyang.com/1000412_Lucky_Wedding_Dates_2095-Year_of_the_Rabbit.html</id>
  <updated>2026-05-07T14:29:10+02:00</updated>
  <summary type="html">&lt;img align='left' width='64' height='64' src='https://www.herongyang.com//Chinese/Wedding/_icon_Wedding.png' />Where to find lucky wedding dates for year 2095? Lucky Wedding Dates: 2095 - Year of the Rabbit   ⇒ Lucky Wedding Dates: 2096 - Year of the Dragon ⇐ Lucky Wedding Dates: 2094 - Year of the Tiger ⇑ Lucky Wedding Dates: 2091 - 2100 ⇑⇑ Wedding Date - The Most Important Date of Your Life  - Rank: 779; Updated: 2026-05-07 14:28:58 -> &lt;a href='https://www.herongyang.com/1000412_Lucky_Wedding_Dates_2095-Year_of_the_Rabbit.html'>Source&lt;/a></summary>
  <author>
   <name>HerongYang.com</name>
  </author>
  <category term="Chinese"/>
 </entry></feed>