What command would you use to stop a process execution?

To stop a process execution, the appropriate command involves sending a signal to the process. The 'sigstop' signal is specifically used to stop a process, which means it will pause its execution and put it into a stopped state. When a process receives a 'sigstop', it cannot be resumed immediately; instead, it must be resumed using a signal like 'sigcont'.

In the context of managing processes in Linux, using 'sigstop' is a common approach when you want to halt a process temporarily without terminating it entirely. It allows for later resumption of the process if needed, making it a useful tool for process management.

The other signals mentioned, while they perform different functions, do not align specifically with the action of stopping a process. For instance, 'sigkill' terminates a process immediately and cannot be caught or ignored by the process, while 'sighup' typically indicates that a controlling terminal has been closed and is often used to signal a process to reload its configuration. Therefore, 'sigstop' is the most appropriate choice when the goal is simply to stop a process's execution without killing it.