In this section, you learned:

Signals:
Understanding the concept of signals, which are software interrupts that can be used to communicate with processes.

Types of Signals:
Exploring various types of signals and their roles in interacting with processes.

kill:
Learning about the kill command and how it can be employed to send signals to processes.

killall and pkill:
Exploring the usage of killall and pkill commands for conveniently terminating processes.

Quiz 4.1: SIGKILL Signal:
Testing your knowledge through a quiz focused on the SIGKILL signal, which is used for immediate and forceful termination of a process.