UNIX for Dummies Questions & Answers

#Define multiple arrays, whose names only differ by a number:
ARRAY_1=(1 2 3)
ARRAY_2=(4 5 6)
ARRAY_3=(7 8 9)

#Define ARRAY_AMOUNT, the number of arrays. In this case ARRAY_AMOUNT is 3:
ARRAY_AMOUNT=3

#Go through a FOR loop a number of times equal to ARRAY_AMOUNT, with the variable "A" being the place setter:
for (( A=1; A=$REGION_AMOUNT; A++ )); do
        
#Set GOOD_ARRAY equal to 'ARRAY_'${A}; ie when A=1 then GOOD_ARRAY will equal ARRAY_1 which is an array containing the values 1 2 3. THIS IS WHAT I DON'T KNOW HOW TO DO:

#DOESN'T WORK:
GOOD_ARRAY='ARRAY_'${A}

echo ${GOOD_ARRAY[@]}
        
endfor

#Define multiple arrays, whose names only differ by a number:
ARRAY_1=(1 2 3)
ARRAY_2=(4 5 6)
ARRAY_3=(7 8 9)

#Define ARRAY_AMOUNT, the number of arrays. In this case ARRAY_AMOUNT is 3:
ARRAY_AMOUNT=3

#Go through a FOR loop a number of times equal to ARRAY_AMOUNT, with the variable "A" being the place setter:
for (( A=1; A<=$ARRAY_AMOUNT; A++ )); do

#Set GOOD_ARRAY equal to 'ARRAY_'${A}; ie when A=1 then GOOD_ARRAY will equal ARRAY_1 which is an array containing the values 1 2 3. THIS IS WHAT I DON'T KNOW HOW TO DO:

#DOES WORK:
GOOD_ARRAY=($(eval echo \${ARRAY_$A[@]}))

echo ${GOOD_ARRAY[@]}

done

1 2 3
4 5 6
7 8 9