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---
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title: handy tools for MMDVM
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summary: >
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Some nice ideas and so...
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date: 2022-07-31T13:12:39+02:00
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#categories: [computerstuff]
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tags: [linux,systemd,networking,manjaro,dns]
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draft: true
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---
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#### the script
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~~~bash
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# file: "kill-mmdvm.sh"
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#!/bin/bash
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#udev/rules.d contains a rule file like:
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#SUBSYSTEM=="tty", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", SYMLINK+="ttyGD77", TAG+="systemd", ENV{SYSTEMD_WANTS}="mmdvmhost.service"
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#ACTION=="remove", SUBSYSTEM=="tty", ENV{ID_VENDOR_ID}=="1fc9", ENV{ID_MODEL_ID}=="0094", RUN+="/etc/udev/kill-mmdvm.sh"
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#
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#mmdvmhost service stopping lasts about 1 minute to succeed, so kill is the option...
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if [ "$ACTION" = "remove" ]
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then
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systemctl kill -s KILL mmdvmhost.service
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fi
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~~~
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#### restarting/reloading udev rules without reboot
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~~~console
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# udevadm control --reload-rules && udevadm trigger
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~~~
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#### gd77 udev rules
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~~~ini
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# file: "/etc/udev/rules.d/99-gd77.rules"
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# USB rules for GD-77
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# Place this in /etc/udev/rules.d/ to let all users talk to the radios by USB.
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#
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SUBSYSTEM=="usb", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
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# HIDAPI/libusb
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SUBSYSTEM=="usb", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
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SUBSYSTEM=="usb", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666"
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# HIDAPI/hidraw
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KERNEL=="hidraw*", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
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KERNEL=="hidraw*", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666"
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# HIDAPI/hiddev
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## We need to unbind this device, otherwise LibUsb will fail to SetConfiguration() and ClaimInterface()
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# For Bootloader (usbhid)
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KERNEL=="hiddev*", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666", RUN+="/bin/bash -c 'ID=$(IFS=/; read -a array <<< %p; echo ${array[-3]}); echo $ID > /sys/bus/usb/drivers/usbhid/unbind'"
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# OpenGD77
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KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666", GROUP="dialout", SYMLINK+="OpenGD77"
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~~~
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***
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Sources:
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* <https://gist.github.com/gru-github/cf7c121e6b0e441676fb3263ebe02193>
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* <https://unix.stackexchange.com/questions/39370/how-to-reload-udev-rules-without-reboot>
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