0x05-processes_and_signals

Processes and signals

This project was about DevOps, Shell, Bash, Syscall and Scripting

It had 12 mandatory tasks that helped me gain some practical knowledge about how to control certain processes in a Linux OS by sending signals using bash scripts.

Mandatory Tasks

0. What is my PID

A Bash script that displays its own PID

1. List your processes

A Bash script that displays a list of currently running processes.

2. Show your Bash PID

A Bash script that displays lines containing the bash word, thus allowing the user to easily get the PID of the Bash process.

3. Show your Bash PID made easy

A Bash script that displays the PID, along with the process name, of processes whose name contain the word bash

4. To infinity and beyond

A Bash script that displays To infinity and beyond indefinitely.

5. Don't stop me now!

A Bash script that stops 4-to_infinity_and_beyond process.

Requirements:

• You must use kill

6. Stop me if you can

A Bash script that stops 4-to_infinity_and_beyond process.

Requirements:

• You cannot use kill or killall

7. Highlander

A Bash script that displays:

• To infinity and beyond indefinitely
• With a sleep 2 in between each iteration
• I am invincible!!! when receiving a SIGTERM signal

Make a copy of your 6-stop_me_if_you_can script, name it 67-stop_me_if_you_can, that kills the 7-highlander process instead of the 4-to_infinity_and_beyond one.

8. Beheaded process

A Bash script that kills the process 7-highlander.

Advanved Tasks

9. Process and PID file

10. Manage my process

11. Zombie