DNS / Server Administration / Web Server
by James · Published September 2, 2017 · Last modified September 17, 2022
DNS servers use many sorts of records to efficiently manage resolution and give crucial domain information. DNS servers cache the information in these records. Each record has a TTL (Time To Live) value in...
DNS / Server Administration / Web Hosting
by James · Published September 1, 2017 · Last modified September 21, 2022
A DNS server is in responsible for maintaining a massive database that maps domain names to IP addresses. DNS servers, also known as Domain Name System servers, are protocols or systems that translate or...
by James · Published September 1, 2017 · Last modified September 14, 2022
DNS is the substance that binds the internet together. DNS is a system that converts domain names to IP addresses for Internet-connected devices like computers and services. It changes www.google.com into Internet Protocol (IP) addresses for human readable domain names...
Conditionally perform a command.
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File syntax IF [NOT] EXIST filename command IF [NOT] EXIST filename (command) ELSE (command) |
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String syntax IF [/I] [NOT] item1==item2 command IF [/I] item1 compare-op item2 command IF [/I] item1 compare-op item2 (command) ELSE (command) |
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Error Check Syntax IF [NOT] DEFINED variable command IF [NOT] ERRORLEVEL number command IF CMDEXTVERSION number command key item A text string or environment variable, for more complex comparisons, a variable can be modified using either Substring or Search syntax. command The command to perform. filename A file to test or a wildcard pattern. NOT perform the command if the condition is false. == perform the command if the two strings are equal. /I Do a case Insensitive string comparison. compare-op can be one of EQU : Equal NEQ : Not equal LSS : Less than < LEQ : Less than or Equal <= GTR : Greater than > GEQ : Greater than or equal >= This 3 digit syntax is necessary because the > and < symbols are recognised as redirection operators |
IF will only parse numbers when one of (EQU, NEQ, LSS, LEQ, GTR, GEQ) is used.The == comparison operator always results in a string comparison. ERRORLEVEL There are two different methods of checking an...
Latest Version / Uncategorized
by James · Published January 27, 2017 · Last modified September 30, 2022
Latest Version / Uncategorized
by James · Published January 27, 2017 · Last modified September 30, 2022
Latest Version / Uncategorized
by James · Published January 27, 2017 · Last modified September 30, 2022
Latest Version / Uncategorized
by James · Published January 27, 2017 · Last modified September 30, 2022
Microsoft’s Edge browser was released in 2015 as a replacement for the now-outdated Internet Explorer web browser. Edge is the default browser for Microsoft platforms (Windows 10 and Xbox One) and offers many capabilities...
Latest Version / Uncategorized
by James · Published January 27, 2017 · Last modified September 30, 2022
The Google Chrome browser is an open source tool that allows you to access the World Wide Web and run Web-based apps. The open source Chromium project serves as the foundation for the Google...
