Question

2

where does the shell fall into the process hierarchy?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 645 / 1 Year ago, wed, february 15, 2023, 3:02:46

When you open a new terminal, it becomes the parent process of all processes forked within it. But where does the bash shell, for example, fall into this process chain? Is its parent the terminal? Are all processes forked within the shell children of the shell? If so, then when I change shells, why do the processes still remain running? In short, where does the shell fall in the process hierarchy?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

overine

Add To Favorites

Follow

Total Points: 20

Total Questions: 109

Total Answers: 98

Location: Aruba

Member since Fri, Jun 24, 2022

2 Years ago

overine questions

1 Is it possible to update flatpaks with the "Software Updater"?

Sat, May 29, 21, 20:35, 3 Years ago

1 after Ubuntu 21.10 upgrade: "cannot attach cgroup program" operation not permitted

Tue, May 11, 21, 21:27, 3 Years ago

1 Shell script keeps executing even if was true

Tue, Jul 12, 22, 00:27, 2 Years ago

1 Wired network settings missing in Ubuntu Desktop 20.10

Wed, Jan 11, 23, 02:15, 1 Year ago

1 How to check my ip is static or dhcp

Tue, Aug 10, 21, 01:39, 3 Years ago

View All

answered 1 Year ago ranquctive · Accepted Answer

Indeed the parent of the bash process is the terminal. You can see the process hierarchy using the ps -aef command:

$ ps -aef

UID        PID  PPID  C STIME TTY          TIME CMD

[...]

sylvain   3510  1862  2 22:02 ?        00:00:01 gnome-terminal

[...]

sylvain   3520  3510  0 22:02 pts/1    00:00:00 bash

sylvain   3587  3520  0 22:03 pts/1    00:00:00 sh

PID: Process ID

PPID: Parent Process ID

In this example I started a sh process (3587) from the bash shell (3520)