UNIX Programming and Technical

Q. How would you kill a process?

A. The kill command takes the PID as one argument; this identifies which process to terminate. The PID of a process can be got using 'ps' command

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UNIX Other Question

Q. What is 'ps' command for?

A. The ps command prints the process status for some or all of the running processes. The information given are the process identification number (PID),the amount of time that the process has taken to execute so far etc Q. What is an advantage of executing a process in background?

A. The most common reason to put a process in the background is to allow you to do something else interactively without waiting for the process to complete. At the end of the command you add the special background symbol, &. This symbol tells your shell to execute the given command in the background.
Example: cp *.* ../backup& (cp is for copy)