In Linux, what signal is sent when you enter the kill pidcommand?1 pointSIGKILL SIGINT SIGTSTP SIGTERM

When you enter the kill <pid> command in Linux, the default signal sent to the process identified by the specified process ID (PID) is SIGTERM. This signal requests the process to terminate gracefully, allowing it to clean up resources before closing.

Here’s a brief explanation of the mentioned signals for context:

1. SIGKILL: This signal cannot be caught, blocked, or ignored and forces the process to terminate immediately.
2. SIGINT: This signal is sent to interrupt a process, typically initiated by pressing Ctrl+C in the terminal.
3. SIGTSTP: This signal is used to suspend a process, usually invoked by pressing Ctrl+Z.
4. SIGTERM: This is the default signal sent by the kill command and allows the process to terminate gracefully.

Given this information, the correct answer is SIGTERM.