Execute script every time a user login/logout using a service (gdm)

Dvir Halutz

4/24/23, 4:25 PM

I'm a newbie in linux and I'll be glad for any help.
I'm using gdm and I want to execute a script **every time** a user login/logout .

To see that the mechanism works, I tried at first to execute the script for login only (and not logout).
I tried to run a service that does that by adding a service under /etc/systemd/user/serv.service.
Below is the Unit I wrote:

[Unit]
Description=service

[Service]
type=oneshot
RemainAfterExit=true
ExecStart=/bin/bash /home/user/Documents/scriptlogin
user=user

[install]
WantedBy=default.target

I enabled the service by systemctl --user start serv.service,
and I see that the script is executed only on reboot, but not on login/logout.
I'm not sure I understand the default.target line, but I'm guessing the runlevel is not changed when user logout or login, so that's why the script is not running again when logout and login again.

Does anyone know how should I fix it?

Thanks in advance!

100

0 + 0

gdm

services

Luuk

4/24/23, 4:29 PM

see: [How can I make a script run automatically after gdm login and logout?](https://askubuntu.com/questions/85985/how-can-i-make-a-script-run-automatically-after-gdm-login-and-logout)

user535733

4/24/23, 4:46 PM

Logout scripts can be unreliable in some circumstances: Systems may crash or suffer power outages, or the user may hold down the power button. Then the script does not run.

Dvir Halutz

4/24/23, 6:35 PM

@Luuk Thanks. Actually that's the first thing I've tried, but we had issue with that too. Our script works when running it manually, but fail to when placed in those folders. We asked different question [here](https://askubuntu.com/questions/1379312/gdm-logout-script-doesnt-write-to-a-file)

Luuk

4/24/23, 6:37 PM

A, `those folders`, yep they seem to always cause a problem.... ?WTF?

karel

4/25/23, 7:30 AM

Does this answer your question? [How can I make a script run automatically after gdm login and logout?](https://askubuntu.com/questions/85985/how-can-i-make-a-script-run-automatically-after-gdm-login-and-logout)

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Execute script every time a user login/logout using a service (gdm)

TH: เรียกใช้สคริปต์ทุกครั้งที่ผู้ใช้เข้าสู่ระบบ/ออกจากระบบโดยใช้บริการ (gdm)

RO: Executați scriptul de fiecare dată când un utilizator se conectează/deconectează folosind un serviciu (gdm)

RU: Выполнять скрипт каждый раз, когда пользователь входит/выходит из системы с помощью службы (gdm)

VI: Thực thi tập lệnh mỗi khi người dùng đăng nhập/đăng xuất bằng dịch vụ (gdm)

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