SOLVED Not understanding bash script

michaelk · 02-14-2024, 09:02 AM

Another solution is bc.

Code:

if [[ $(echo "$voltage>200" | bc) ]]; then
   echo "Less than 200"
   gpio write 6 0
else
   echo "greater than 200"
   gpio write 6 1
fi

bc outputs 0 if less than and 1 if greater. if uses 0 if true and 1 if not.

syg00 · 02-14-2024, 03:54 PM

Quote:

Originally Posted by stockton

grid_voltage/state also returns the voltage as a float

Pity.

Were it me, I'd simply include the period as a separator for awk, then everything you already have will should work.

pan64 · 02-15-2024, 01:56 AM

from the other hand the tool has a json output which can be easily processed with python (for example) and it has no any problem with floats and to execute additional commands (like gpio) too.

stockton · 02-16-2024, 11:41 AM

Thank you NevemTeve