error during run process

[Davud2020]

# ./low_bat_shutdown.sh 
bash: ./low_bat_shutdown.sh: /bin/bash^M: bad interpreter: No such file or directory

solution:

# sed -i -e 's/\r$//' low_bat_shutdown

[NeonHorizon]

This happens when a file is created with a text editor which uses Windows line endings instead of Unix line endings.

If you are using Windows I recommend you use Sublime Text, or Notepad++ or one of the other code editors rather than Windows Notepad, etc.