What Is APT
This section provides a quick introduction on APT (Advanced Package Tool), which is the default software package manager on Ubuntu computers. 2025-12-29, ∼213🔥, 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. 2025-12-29, ∼213🔥, 0💬
Layers of Memory and Access Speed
This section describes layers of memory: CPU Register, CPU Caches, RAM and hard disk. 2025-12-29, ∼213🔥, 0💬
About This Book
This section provides some detailed information about this book - PKI Certificate Tutorials - Herong's Tutorial Examples. 2024-11-27, ∼213🔥, 0💬
ASN.1 Data Structure of PKCS12 File
This section provides a tutorial example to show the ASN.1 data structure of a PKCS12 file. 2024-11-27, ∼213🔥, 0💬
nsIConverterOutputStream handling GB2312 characters
'Herong's Tutorial Notes on GB2312 Character Set' book was cited in a MozillaZine forum post in 2012. 2023-04-15, ∼213🔥, 0💬
Insert and reterive the image into BLOB type
'Inserting BLOB Values with setBinaryStream() Method' tutorial was cited in a Sun forum post in 2009. 2023-01-02, ∼213🔥, 0💬
Oracle Portal 10.1.4 help
'Herong's Tutorial Notes on Web Service and SOAP' tutorial book was cited in a forum post in Vietnamese language in 2009. 2023-01-02, ∼213🔥, 0💬
Formating of SQL value for BLOB types (as hex vs ascii-bytes)
'Inserting BLOB Values with SQL INSERT Statements' tutorial was cited in a message in the H2 Database Google group posted in 2010. 2022-12-29, ∼213🔥, 0💬
Počítačová síť a internet
'HTTPS Communication Data Encryption' tutorial was cited in a vavreckova.zam.slu.cz article in 2020. 2022-12-14, ∼213🔥, 0💬
PHP on the fly flush xml to zipfile and push download
'Create ZIP Archive for Download' tutorial was cited in a devasking.com post in 2021. 2022-11-05, ∼213🔥, 0💬
Twitter OAuth Library/HUD
'SHA1 Message Digest Algorithm Overview' tutorial was cited in a Second Life Twitter OAuth Library code in 2011. 2022-11-02, ∼213🔥, 0💬
Year 2075 Chinese Calendar - Year of the Sheep
2022-10-31, ∼213🔥, 0💬
Application of the Enhanced SHA-1
'Digital Signature Scheme for Email Messages' tutorial was cited in a JOURNAL OF APPLIED SCIENCES RESEARCH paper in 2015. 2022-10-19, ∼213🔥, 0💬
Year 2054 Chinese Calendar - Year of the Dog
2022-10-15, ∼213🔥, 0💬
Sample program to test SSL Connection with certicates
'SslReverseEchoer.java - SSL Server Socket Example' tutorial was cited in a technology blog in 2012. 2022-10-09, ∼213🔥, 0💬
Year 2074 Chinese Calendar - Year of the Horse
2022-10-06, ∼213🔥, 0💬
1908 年年歷 - 猴年
中國年歷 - 1908 年年歷 - 猴年 2022-10-06, ∼213🔥, 0💬
Most Popular Search Terms
The most popular search terms based on query strings used in referral URLs for year 2020 with 0 week of log files missing. 2022-10-01, ∼213🔥, 0💬
What Is Bash (Bourne Again SHell)
This section provides a quick introduction of Bash shell created by Brian Fox in 1989. 2025-12-29, ∼212🔥, 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. 2025-12-29, ∼212🔥, 0💬
What Is Shell
This section provides a quick introduction of shell programs on Ubuntu computer. Bash (Bourne Again SHell) is the default shell program. 2025-12-29, ∼212🔥, 0💬
"shutdown" and "halt/poweroff/reboot" Commands
This section provides a quick introduction of the 'shutdown' command, and its alias commands 'halt', 'poweroff', and 'reboot'. 2025-12-29, ∼212🔥, 0💬
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