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I want to setup my machine running Ubuntu Server to automatically run abcde when a disc is inserted.

• 
  /usr/local/bin/discready returns 0 when a disc is waiting to be read, returns non-zero otherwise


• 
  /usr/local/bin/autorip runs discready, checks for a 0 exit code every 15 seconds, and runs abcde when that condition is met.


• 
  /etc/systemd/system/autorip.service was created using instructions from this article
  

/usr/local/bin/discready script:

#!/usr/bin/python3

# usage: DEVICE=/dev/sr0 discready



import fcntl

import os

import sys



DEFAULT_DEVICE = '/dev/cdrom'

STATUSES = ['NA', 'NO_DISK', 'OPEN', 'READING', 'DISC']



def drive_status(device):

    # https://superuser.com/a/1367091/1001393

    file = os.open(device, os.O_RDONLY | os.O_NONBLOCK)

    status = fcntl.ioctl(file, 0x5326)

    os.close(file)

    return status



if __name__ == '__main__':

    device = os.environ.get('DEVICE', DEFAULT_DEVICE)

    status_num = drive_status(device)

    status = STATUSES[status_num]



    if status_num == STATUSES.index('DISC'):

        sys.exit(0)



    print(f'Device: {device}, Status: {status}')

    sys.exit(status_num)

/usr/local/bin/autorip script:

#!/usr/bin/env bash

# wait for discready to return a zero exit code, run abcde



while true; do

  discready

  result=$?

  [ $result -eq 0 ] && abcde -N

  sleep 15

done

/etc/systemd/system/autorip.service

Description=autorip

After=network.target



[Service]

Type=simple

User=rd

WorkingDirectory=/home/rd

ExecStart=/home/rd/autorip

Restart=always



[Install]

WantedBy=multi-user.target

output of systemctl status autorip.service

● autorip.service - autorip

   Loaded: loaded (/etc/systemd/system/autorip.service; enabled; vendor preset: enabled)

   Active: failed (Result: exit-code) since Sun 2019-02-24 05:22:36 UTC; 18min ago

  Process: 20642 ExecStart=/home/rd/autorip (code=exited, status=203/EXEC)

 Main PID: 20642 (code=exited, status=203/EXEC)



Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Main process exited, code=exited, status=203/EXEC

Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Failed with result 'exit-code'.

Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Service RestartSec=100ms expired, scheduling restart.

Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Scheduled restart job, restart counter is at 5.

Feb 24 05:22:36 kingwin systemd[1]: Stopped autorip.

Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Start request repeated too quickly.

Feb 24 05:22:36 kingwin systemd[1]: autorip.service: Failed with result 'exit-code'.

Feb 24 05:22:36 kingwin systemd[1]: Failed to start autorip.

autorip works exactly as I want when running in the terminal. Attempting to turn this into a service is where I'm getting tripped up. Is it because discready is returning a non-zero exit code? Any troubleshooting tips or pointers would be greatly appreciated.