Simple Simon  wrote:
> I am working on a battery powered car and want the Pi to shut down
> automatically if the battery starts to go flat to try to prevent SD card
> corruption. I am a beginner to bash scripts! I will run this via crontab...
>
> #!/bin/bash
> powerstatus=$(vcgencmd get_throttled)
> if [ $powerstatus="throttled=0x1" ]
> then
> echo Under Voltage Detected - Shutting Down
> sudo halt
> else
> echo Voltage Normal
> fi
>
> Obviously it is not working!! Could someone correct and explain for me
> please.

You need spaces in the test:-

    if [ $powerstatus = "throttled=0x1" ]

Without the spaces you are just testing if '$powerstatus="throttled=0x1"'
is not an empty string, and it never will be an empty string.


--
Chris Green
·

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