Useful tips for everyday
What is mouse jacking? MouseJack is a class of vulnerabilities that affects the vast majority of wireless, non-Bluetooth keyboards and mice. These peripherals are ‘connected’…
Can I see history of commands in cmd? Using the Command History menu: Open the Start menu and type cmd in the search bar. Click…
How are pipes used in commands? Pipe is used to combine two or more commands, and in this, the output of one command acts as…
How do I create a self signed intermediate certificate? Create Intermediate CA Certificates Create an OpenSSL configuration file called ca_intermediate. Generate the private key using…
How do I drop a specific partition in Oracle? Use one of the following statements to drop a table partition or subpartition: ALTER TABLE DROP…
Can Apache access files outside document root? As long as you have the permissions set up correctly, PHP can read from any file you want…
What does IP mean in headphones? Lucky for you, we have an answer to that. IP stands for ‘Ingress Protection,’ and can tell you how…
What is phase in periodic signal? The phase of an oscillation or signal refers to a sinusoidal function such as the following: where , ,…
What is repeatability of measurement? Repeatability or test–retest reliability is the closeness of the agreement between the results of successive measurements of the same measure,…
How to calculate optocoupler efficiency in a circuit? The most convenient way of specifying optocoupling efficiency is to quote the output-to-input current transfer ratio (CTR)…