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Capturing output of rigctl commands with Bash

 

I working on a Bash script to see if my IC-7300 is powered. I know that enter the following on a command line
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rigctl -m 3073 -r /dev/ttyUSB1 -s 115200 get_powerstat
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will return a "1" if the power is on. What I'm having trouble with is putting that in a bash .sh file and then capturing that output. It is all part of a bigger project.
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As you may surmise, I know just enough about Bash to be dangerous.
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73
Dave
WB9TEN
 

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Try this script:

check-ic7300-power.sh
--
#!/bin/bash

rigctl -m 3073 -r /dev/ttyUSB1 -s 115200 get_powerstat
--

Once the file is created, make it executable with:

?? chmod 755 check-ic7300-power.sh


Finally, try running it with:

?? ./check-ic7300-power.sh

--David
KI6ZHD



On 03/19/2025 12:37 PM, dtmenges@... via groups.io wrote:

I working on a Bash script to see if my IC-7300 is powered. I know that enter the following on a command line
?
rigctl -m 3073 -r /dev/ttyUSB1 -s 115200 get_powerstat
?
will return a "1" if the power is on. What I'm having trouble with is putting that in a bash .sh file and then capturing that output. It is all part of a bigger project.
?
As you may surmise, I know just enough about Bash to be dangerous.
?
73
Dave
WB9TEN
 

dtmenges@... via groups.io <dtmenges@...> wrote:

rigctl -m 3073 -r /dev/ttyUSB1 -s 115200 get_powerstat

will return a "1" if the power is on. What I'm having trouble with is putting that in a bash .sh file and then capturing that output. It is all part of a bigger project.

As you may surmise, I know just enough about Bash to be dangerous.
Try:

powerstat=$(rigctl -m 3073 -r /dev/ttyUSB1 -s 115200 get_powerstat)

if [ "$powerstat" = "1" ]; then
echo Power is on
else
echo Power is off
fi
 

Thanks for the responses. I wasn't specific enough about what I was trying to do, and Adam's guess was spot on. I was overthinking this and trying to use a pipe (|) and grep. Turns out it was just the simple variable assignment in Adam's first line. I think I had tried that but didn't get the syntax correct.
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Eventually this script will be folded in with some other code that will be run periodically by either chron or systemd to see if VARA, rigctld, and Flrig is running on a Raspberry Pi for a BPQ HF port.? Not sure exactly sure what radio we will run yet but this is the last piece of the puzzle I need to make sure things restart after a power failure. There is a generator on campus but I can't test the generator startup and Murphy likes to hang out at remote locations.
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Again, thanks for responding. Now for the next challenge.
?
73
Dave
WB9TEN

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