Useful tips for everyday
Where does an email go in the postfix queue? When an email fails to send, it ends up in one of two queues within Postfix:…
Are there no fly zones for drones? While there are no FAA restrictions on drone flight over National Parks, the National Park Service (NPS) declared…
What is the size of an electromagnet? Different gauge enameled copper wire I used is 0.42 mm, 0.70 mm and 1.0 mm. Winding width is…
How do you type on a Swiss German keyboard? It is printed on the G key, and it is supposed to be accessible with the…
What is the difference between probability distribution and probability density? A probability distribution is a list of outcomes and their associated probabilities. A function that…
What happens to the slow query log in MySQL? If the destination is NONE, the server writes no queries even if the slow query log…
How are disjoint sets implemented in Python? In Python, you use the Set isdisjoint() method to check if two sets are disjoint or not: set_a.isdisjoint(set_b)…
What pages should be on a wedding website? Two important pages to include are travel and accommodations info. Let your guests know where the nearest…
How to create a local mirror of the latest update? In the targeted directory, there will be a new directory named after the Repository ID.…
What does it mean to ping a device? echo request The goal of pinging a device is to find out if a device is reachable…