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Top Forums Shell Programming and Scripting Variable substitution with arrays Post 303003510 by Kingzy on Thursday 14th of September 2017 10:48:43 PM
Old 09-14-2017
Bakunin: My apologies for the late reply!

Your solution looks very promising Smilie

I played with it a little bit to get the hang of it.

I hit a roadblock as soon as I replaced "1 2 3 4 5" in the nested for loop with "animals fruits drinks cities countries". I tried it in 2 ways but got the same result in both attempts. I also tried putting

Code:
typeset array[animals]="dog cat horse penguin cow"
typeset array[fruits]="orange apple grapes peach mango"
typeset array[drinks]="juice milk coffee tea coke"
typeset array[cities]="toronto paris london glasgow sydney"
typeset array[countries]="canada france england scotland australia"
all=(animals fruits drinks cities countries)

typeset -i i=1
typeset -i j=1

printf 'Output 1\n\n';
# display column-wise
for i in 1 2 3 4 5; do
     for j in animals fruits drinks cities countries; do
          echo "${array[${j}]}" | cut -d' ' -f $i
     done
done

printf '\n\nOutput 2\n\n';

# display column-wise
for i in 1 2 3 4 5; do
     for j in "${all[@]}" ; do
          echo "${array[${j}]}" | cut -d' ' -f $i
     done
done

Code:
abc@xyz$ ./typeset.sh
Output 1

canada
canada
canada
canada
canada
france
france
france
france
france
england
england
england
england
england
scotland
scotland
scotland
scotland
scotland
australia
australia
australia
australia
australia


Output 2

canada
canada
canada
canada
canada
france
france
france
france
france
england
england
england
england
england
scotland
scotland
scotland
scotland
scotland
australia
australia
australia
australia
australia

I had also tried the following and still got the same results:

Code:
typeset array['animals']="dog cat horse penguin cow"
typeset array['fruits']="orange apple grapes peach mango"
typeset array['drinks']="juice milk coffee tea coke"
typeset array['cities']="toronto paris london glasgow sydney"
typeset array['countries']="canada france england scotland australia"
all=('animals' 'fruits' 'drinks' 'cities' 'countries')


At least this alternative works just fine:


Code:
typeset array[1]="dog cat horse penguin cow"
typeset array[2]="orange apple grapes peach mango"
typeset array[3]="juice milk coffee tea coke"
typeset array[4]="toronto paris london glasgow sydney"
typeset array[5]="canada france england scotland australia"
all=(1 2 3 4 5)

# display column-wise
for i in 1 2 3 4 5; do 
     for j in "${all[@]}"; do 
          echo "${array[$j]}" | cut -d' ' -f $i
     done
done

abc@xyz$ ./typeset.sh
dog
orange
juice
toronto
canada
cat
apple
milk
paris
france
horse
grapes
coffee
london
england
penguin
peach
tea
glasgow
scotland
cow
mango
coke
sydney
australia

Is there a way to make it work with all=(animals fruits drinks cities countries) ?
 

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