Which command is used to view running processes in Linux?

The command used to view running processes in Linux is "ps." This command stands for "process status" and is a standard Unix/Linux utility that allows users to view currently running processes. When executed, it provides a snapshot of the currently active processes along with their process IDs (PIDs), terminal associated with the processes, CPU and memory usage, and the command that started the process.

The "ps" command can be customized with various options to display more detailed information or to show processes belonging to a specific user, among other functionalities. For example, using "ps aux" shows all running processes along with comprehensive details.

The other choices provided do not pertain to Linux. "launch" is not a standard command in Linux for viewing processes, "cmd" refers to the command prompt in Windows, and "tasklist" is a Windows command used to display currently running processes. These distinctions highlight that "ps" is the command specifically designed for the Linux environment to monitor and manage processes.