abernal's blog

Introduction

We will cover common utilities for process monitoring like ps, top and sar. Most of this commands make heavy access to the pseudo-filesystems mounted at /proc and /sys.

Objectives

Introduction

Signals are a notification mechanism among processes, they can be either termination or warning signals, that allow process coordination and monitoring

Objectives

• Explain what signals are and how they are used
• Know the different signals and types of signals available in Linux
• Use kill, killall and pkill to send signals from the command line

What signals are

They are a inter process communication (IPC) mechanism used to notify process about asynchronous events (or exceptions).