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misiak	2011-05-10 , 11:50
Posts: 805 \| Thanked: 1,605 times \| Joined on Feb 2010 @ Gdynia, Poland	#154

Originally Posted by cipper

i think that
TEMP=$(( $TEMP / 10 ))
is the right one

Yes, but both are correct (there is no 'right' one in the meaning that only one works). When you use $(( expression )) you don't need to add '$' in front of variables in expression. If you don't believe me, try running:

Code:

FILE_TEMP=`cat /sys/class/power_supply/bq27200-0/temp`
echo "Temp got from file: " $FILE_TEMP
MISIAK_TEMP=$((FILE_TEMP/10))
echo "Misiak way: " $MISIAK_TEMP
CIPPER_TEMP=$(($FILE_TEMP/10))
echo "Cipper way: " $CIPPER_TEMP

The result is the same

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