ps

The standard ps tool can be used to provide a range of information about a particular process. For example, the command can be used to display the state of the process, the name of the user running the process, its process ID and parent process ID, the priority and nice value, resident and virtual memory sizes, the start time, the execution time, and the process name with arguments. For example:

Note that for a process with a large number of arguments, the standard ps command displays only a limited set of the arguments based on available space in the terminal window.