1.12.2.2. Some common system calls are create, delete, read, write, reposition, or close. Also, there is a need to determine the file attributes â get and set file attribute. Many times the OS provides an API to make these system calls.
How Long Should it Take. A mile equals 1.6 kilometers or 5280 feet, and is the most basic scale against which a runner or a sprinter can compare his/her speed. The average time to run a mile is around 10 minutes. In the basic training that the army provides, recruits are required to run a mile within 9 minutes. Going by this standard, it is safe to say that 10 minutes is a good estimate of the average time, since recruits in the army are physically much stronger and agile.
The most important factor determining run speed over a long distance is the runnerâs fitness level. An elite athlete may complete a mile in less than five minutes, and the world record at the time of publication is three minutes and 43 seconds, held by Hicham El Guerrouj. Someone new to running, using a run-walk system to build her endurance, may need between 12 and 15 minutes. Most runners are close to the median of these two extremes and should be comfortable completing a mile in seven to nine minutes.