Is it possible to intercept the call of the program termination command in the terminal?

Question

linux

There is a script that launches several programs and ultimately remains access through pressing the ctrl + c combination only for the last launched program.
for example `cd hapi && npm run hapi & cd ../ & node scripts/start.js`
starts the frontend server and the backend server.
- When the program is terminated, only the frontend server
is terminated accordingly - is it possible to somehow intercept pressing ctrl + c or ctrl + z and, by calling the appropriate commands, terminate the work and the back end of the program?

Answer 1

Tin. Change to systemd.
vim /etc/systemd/system/backend.service
[Service]
ExecStart=/usr/bin/node /opt/backend/server.js
Restart=always
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=backend
User=root
Group=root
WorkingDirectory= /opt/backend
[Install]
WantedBy=multi-user.target
sudo systemctl daemon-reload
sudo systemctl start backend.service

Answer 2

Write two units for systemd and not do any costing, for example.
You can even run it through systemd-run if you try it once.

Answer 3

man-kill

Answer 4

Theoretically, it is possible through the interception of signals using trap. But it is more correct, as already said, to do everything with systemd.