major functions of an operating system such as linux
Operating system An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
Malware Once a malicious program is installed on a system, it is essential that it stays concealed, to avoid detection. Software packages known as rootkits allow this concealment, by modifying the host's operating system so that the malware is hidden from the user. Rootkits can prevent a malicious process from being visible in the system's list of processes, or keep its files from being read.[25]
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.
.properties Each parameter is stored as a pair of strings, one storing the name of the parameter (called the key), and the other storing the value.