Herong's Tutorial Examples

XML Tutorials - Herong's Tutorial Examples
This XML tutorial book is a collection of notes and sample codes written by the author while he was learning XML himself. Topics include introduction to XML, DTD (Document Type Definition), XSD (XML Schema Definition), XPath (XML Path Language), XSL (Extensible Stylesheet Language), XSLT (XSL Transf... 2025-07-18, ≈13🔥, 3💬

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Sonoma Safari Profile share passwords between profiles
'Manage Keychains with Commands' tutorials were cited in a reddit.com post in 2023. 2024-01-04, ∼133🔥, 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, ∼155🔥, 0💬

Test FTP Access Remotely on CentOS
This section provides a tutorial example on how to update firewall on the vsftpd server (and its firewall gateway if it is served in the cloud) to open ports 21 and 30000-31000 for inbound connections. 2024-01-03, ∼178🔥, 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, ∼236🔥, 0💬

Support FTP Over TLS on CentOS
This section provides a tutorial example on how to turn SSL/TLS support in vsftpd server on CentOS systems. A private-public key pair and a self-signed certificate is generated with the OpenSSL tool. 2024-01-03, ∼187🔥, 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, ∼179🔥, 0💬

Deprecated: Get Free Ether from faucet.dimensions.network
This section provides a tutorial example on how to get some free Ether money from faucet.dimensions.network. 2024-01-03, ∼1606🔥, 5💬

💬 2024-01-03 HAMID: THANKS FOR GOOD SITE

💬 2024-01-03 HamidHabibzadeh: Thanks for good site.

💬 2023-05-02 micky: please sites not opening help me with eth 0x8519a91Abe468d9dA7777bedcB0529b544 e575e5

💬 2022-04-21 Jake Thompson: Hello my names Jake or Dj Kutta , Thank you for the test eth! this is helpful in learning about wallets and the network. Thank y...

Decrypting Encrypted SOAP Message
This section describes how the message receiver should decrypt an encrypted SOAP message in 2 steps: decrypt the encrypted secret key with receiver's private key and decrypt the encrypted message with the secret key. 2024-01-01, ∼3006🔥, 2💬

💬 2024-01-01 marco: 0A 7D 00 F9 C1 00 00 00 10 00 18 D1 04 A4 00 01 00 40 01 01 00 14 11 01 03 D4 12 01 04 44 01 02 02 02 01 9C 01 0C 02 01 4A 02 0B...

💬 2020-02-19 lolzl337: alert('1');

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, ∼198🔥, 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, ∼226🔥, 0💬

"last/lastb" - Review Login History
This section provides a quick introduction of the 'last' and 'lastb' commands, which allows you to review login history and login attempts. 2023-12-28, ∼187🔥, 0💬

Checking Variable Values in a Debugging Session
This section provides a tutorial example on how to check values of local variables in a debugging session. 2023-12-28, ∼179🔥, 1💬

💬 2023-12-28 Lolipop: /* * nonsence */

SSH Protocol and ssh/scp Commands
This chapter provides introductions and tutorial notes on SSH (Secure SHell) protocol and 'ssh/scp' commands. Topics include SSH connection steps; user password and public key authentication methods; SSH server configuration settings; 'ssh' for remote login sessions; 'scp' for copying remote files. 2023-12-26, ∼216🔥, 0💬

Free Chinese Calendar 2038 - Year of the Horse
Want to know when is the 2038 Chinese New Year day? Look for free Chinese calendars for 2038? Chinese New Year Date for Year 2038 ⇒ Free Chinese Calendar 2039 - Year of the Goat ⇐ Free Chinese Calendar 2037 - Year of the Snake ⇑ Free Chinese Calendars: 2031 - 2040 ⇑⇑ Free Chinese Calendars 2023-12-26, ∼8978🔥, 3💬

💬 2023-12-26 Herong: Xu, you’re most welcome!

💬 2023-12-18 L Xu: Thank you so much for sharing the beautiful Chinese calendars.

Ruby Driver 1.0 for Apache Cassandra Documentation
'DumpKey.java - Dumping Private Keys Out of keystore' tutorial was cited in a datastax.com Ruby documentation in 2014. 2023-12-26, ∼135🔥, 0💬

Installing Apache HTTP Server 2.2.25 on Windows
This section describes how to install Apache 2.2.25 binary distribution on Windows systems. 2023-12-22, ∼1984🔥, 4💬

💬 2016-06-19 Herong: that was an interesting test.

💬 2016-06-17 a: <?php echo 'hello'; ?>

Certificate in PEM Format
This section describes what is certificate PEM (Privacy Enhanced Mail) format - A format uses PEM idea to convert a certificate in DER format to a message of printable characters. The conversion uses the Base64 encoding. 2023-12-22, ≈17🔥, 8💬

💬 2023-11-13 shady: MIICUTCCAfugAwIBAgIBADANBgkqhkiG9w0B AQQFADBXMQswCQYDVQQGEwJDTjELMAkGA1UECBMCUE4xCzAJBgNVBAcTAkNOMQsw CQYDVQQKEwJPTjELMAkGA1UECxM...

💬 2023-10-16 subbarao: thanks

💬 2021-12-27 Azul: Why do you want me to write things like that?

💬 2020-02-23 Herong: Mark, if your certificate is signed by your own CA, put it on the Apache server together with the CA certificate to test. Other ...

💬 2020-02-17 mark scorfield: Hi i have a pem certificate x509 that i would like to share against my own certificate signing authority , what is the best way ...

(More comments ...)

PHP Script Source Code File Format
This section describes the PHP script source code file format - A text file with PHP code segments mixed into non-PHP text. The most common way to mix PHP codes is to use the PHP processing tag '?php'. 2023-12-18, ∼327🔥, 1💬

💬 2023-12-18 yas: Hello, Nice to meet you!

Viewing Components of Certificate Signing Request
This section provides a tutorial example on how to view different components of a CSR (Certificate Signing Request) for your public key with OpenSSL. 2023-12-17, ∼887🔥, 5💬

💬 2023-12-17 Herong: NB, Thanks for your comments. I see the value of signing the CSR now and will update the book accordingly.

💬 2023-12-15 NB: Your CSR does not contain your private key. It contains your public key and information about the domain(s) for which it should ...

💬 2014-03-29 Herong: Hi Mike, Sorry for the inconvenience. HTML tags are supported, but they are limited to admin users only to reduce spamming and h...

💬 2014-03-23 Mike: Wow. What a waste of time trying to make a legible comment post. No instructions on how to get a paragraph break, include a angl...

💬 2014-03-23 Mike: You made a note in "Viewing Components of Certificate Signing Request" where you said, "The request is signed with my private ke...

Using Visual Basic with Microsoft Access
This section provides tutorial example on how to add a Visual Basic code in Microsoft Access database to be executed as a macro on database tables. 2023-12-16, ∼6208🔥, 11💬

💬 2023-12-16 v: Thank you!

💬 2022-02-27 bob: this didnt help

💬 2021-10-27 fahis: lets go

💬 2018-08-11 Herong: trina, I will make corrections. Thanks for the comment.

💬 2018-08-11 trina: Why spreading misinformation? Pages like this are confusing for new users, with half-facts and limited instruction. First: Acces...

(More comments ...)

D800: High Surrogates
This section provides a quick summary of the Unicode code point block: 'High Surrogates', which contains 896 code points to represent High Surrogates used in the UTF-16 encoding 2023-12-16, ∼100🔥, 1💬

RDKit: Open-Source Cheminformatics Software
This chapter provides introductions and tutorial examples on RDKit, an open-source cheminformatics software. Topics include installing options; install RDKit Python library with Anaconda; trying to find RDKit binary package for CentOS systems; building RDKit from source code; testing RDKit C++ API; ... 2023-12-13, ∼486🔥, 1💬

💬 2023-12-13 Himani shivhare: Can you help me? In preparing spectral data of organosilen?

Free Chinese Calendar 2023 - Year of the Rabbit
Want to know when is the 2023 Chinese New Year day? Look for free Chinese calendars for 2023? Chinese New Year Date for Year 2023 ⇒ Free Chinese Calendar 2024 - Year of the Dragon ⇐ Free Chinese Calendar 2022 - Year of the Tiger ⇑ Chinese New Year Dates in 2021 to 2030 ⇑⇑ Free Chinese Calendars 2023-12-13, ≈293🔥, 8💬

💬 2023-12-13 Daniel Xu: thank you for sharing

💬 2023-12-13 Daniel Xu: thank you for your service

💬 2023-01-25 Joanne Robertson: I'm grateful for this generous gift and you send in return, good health, good wealth, long life. I can imagine all the delicious...

💬 2023-01-25 Joanne Robertson: This is amazing for me, many years I've missed out on Chinese New Year Calendar. My grandpa was Chinese gardener Roslyn Rd Mt We...

💬 2023-01-12 ShengLi: Si nian kuai le!!!

(More comments ...)

"reg.exe" - Query Registry Keys and Values
This section provides a tutorial example on how to query registry keys and values with the 'query' command of the 'reg.exe' program. 2023-12-12, ∼320🔥, 1💬

💬 2023-12-12 JOGA: hi, good job how i del firefox, unistall in appdata. FOR /F "skip=2 tokens=2,*" %%A IN ('reg.exe query "HKEY_CURRENT_USER\Softwa...

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