List Logged In Unix Users Unix has many commands to list users who are logged in. These commands include ‘w,’ ‘who,’ and ‘users:’ $ w 9:51PM up 99 days, 5:39, 2 users, load averages: 0.83, 0.90, 0.90 USER TTY FROM LOGIN@ IDLE WHAT will p0 c-66-164-235-73. 8:11AM – w spencer p3 c-66-164-235-73. 8:26PM 1:24 pine …
Cell phone frequencies are the frequency ranges within the Ultra High Frequency (UHF) band that are designated for cell phone use. Bluetooth devices, wireless networks, and television signals also use this frequency band. Although cellular phone systems divide cities and geographic areas into smaller cells of coverage, it allows for a fair amount of frequency …
There are several different types of traffic cameras. Some types of traffic cameras are only focused on traffic patterns and traffic density. Other types of traffic cameras are placed in locations where traffic infractions commonly occur to capture traffic incidents and record the details for punitive purposes. Cameras for Traffic Monitoring Cameras for traffic monitoring …
Yagi Antennas are one of the most well-known directional antennas in use throughout the world and are used for communications in the medium range of three to five miles between two points. They can also be used as a bridge antenna to connect clients to an access point. The original inventors of the antenna design …
FTP (File Transfer Protocol) is the generic term for a group of computer programs aimed at facilitating the transfer of files or data from one computer to another. It originated in the Massachusetts Institute of Technology (MIT) in the early 1970s when mainframes, dumb terminals and time-sharing were the standard. Although the FTP programs have …
When starting up Microsoft Word or Excel (or other Office products), the “Compile Error in Hidden Module” issue may arise. Starting up the program will prompt the error message to appear and display one of the following or a similar message: Compile error in hidden module: AutoExec Compile error in hidden module: AutoExecNew Compile …
Dielectric grease is a translucent substance used to seal electrical conductors in order to prevent dirt, dust, sand, and other foreign materials from sticking to the conductor and preventing it from transferring a current between the two contact points. Dielectric grease also blocks moisture, thereby preventing corrosion. How Dielectric Grease Works Dielectric grease is a …
Yahoo Answers is a social networking platform that Yahoo sponsors. It allows users to ask other Yahoo users questions and receive answers based on specific categories. Yahoo Answers is ideal for those who wish to receive answers to personal questions and allows others to rate the best answer, specify their individual sources and qualifications concerning …
Potassium alum is also known as potash alum, tawas, and alum (its common name). The specific compound is the hydrated potassium aluminum sulfate and it is commonly found in deodorant, aftershave treatments, fireproof textiles, baking powder, and used in leather tanning and water purification. It is soluble and liquefies when heated. Potassium alum is colorless …
Wireless routers are network devices that combine the functionalities of a router and a wireless access point. Wireless routers can be connected to broadband modems to provide wireless access to the Internet to two or more computers or laptops within a home environment. They enable greater mobility for laptops and other portable computers. They can …