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public/subjects/0-shell/job-control/README.md

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job control

Objectives

You must follow the same principles as the first subject.

Job control refers to the ability to selectively stop (suspend) the execution of processes and continue (resume) their execution at a later point.

In job control, you will have to implement the following builtins:

  • jobs
  • bg
  • fg
  • kill
  • disown

You must also be able to stop jobs with the Ctrl + Z.

Instructions

  • The project has to be written in a compiled language like (C, Rust or other), no semi compiled language like (Pearl and others) are allowed.
  • The code must respect the good practices

This project will help you learn about:

  • Job control
  • Process creation and synchronization
  • Commands syntax
  • Scripting language

Usage

student$ ./0-shell
$ tar -czf home.tar.gz . &
[1] 8287
$ sleep 50 &
[2] 8870
$ jobs
[1]-  Running                 tar -czf home.tar.gz . &
[2]+  Running                 sleep 50 &
$ jobs -l
[1]- 8287 Running                 tar -czf home.tar.gz . &
[2]+ 8870 Running                 sleep 50 &
$ kill 8287
[1]+  Terminated              tar -czf home.tar.gz .
& jobs
[2]+  Running                 sleep 50 &
$ exit
student$