What command would you use to list all currently running processes?

The command to list all currently running processes in a Linux environment is "ps aux". This command displays a snapshot of all current processes, along with detailed information about each process such as the user running the process, process ID (PID), CPU usage, memory usage, and the command that started the process.

The "ps" command stands for "process status," and the "aux" options provide comprehensive information about all users' processes, including those not attached to a terminal. This makes it a go-to command for administrators and users who want to identify what processes are active on the system at a given moment.

While other commands like "top" and "htop" also provide views of running processes, they do so in a dynamic, real-time manner and don't output a static list in the same way that "ps aux" does. "pstree" shows running processes in a tree format, which is useful for visualizing the parent-child relationships between processes but does not specifically fulfill the request to simply list all processes. Thus, "ps aux" is the correct and most straightforward choice for listing currently running processes.