Shell Programming and Scripting

declare -a index=(0 1 2 3 4);

declare -a animals=(dog cat horse penguin cow);

declare -a fruits=(orange apple grapes peach mango);

declare -a drinks=(juice milk coffee tea coke);

declare -a cities=(toronto paris london glasgow sydney);

declare -a countries=(canada france england scotland australia);

declare -a all=(animals fruits drinks cities countries);

for i in "${index[@]}" ; do
	echo ${i};
	animals="${animals["${i}"]}";
	echo $animals;
	fruits="${fruits["${i}"]}";
	echo $fruits;
	drinks="${drinks["${i}"]}";
	echo $drinks;
	cities="${cities["${i}"]}";
	echo $cities;
	countries="${countries["${i}"]}";
	echo $countries;
done

0
dog
orange
juice
toronto
canada
1
cat
apple
milk
paris
france
2
horse
grapes
coffee
london
england
3
penguin
peach
tea
glasgow
scotland
4
cow
mango
coke
sydney
australia

for i in "${index[@]}" ; do
	echo ${i};
	for j in "${all[@]}" ; do
		echo ${!j[${i}]};
	done
done

0
dog
orange
juice
toronto
canada
1





2





3





4





abc@xyz$

#!/bin/ksh
animals=(dog cat horse penguin cow)
fruits=(orange apple grapes peach mango)
drinks=(juice milk coffee tea coke)
cities=(toronto paris london glasgow sydney)
countries=(canada france england scotland australia)
sparse[1]=first
sparse[10]=tenth
sparse[33]='thirty-third'
sparse[100]=hundredth

typeset -A associative
associative["a b"]='A B'
associative["x y z"]='X Y Z'
associative["SomeOtherString"]='Anything you might want'

arrays=(animals fruits drinks cities countries sparse associative)
typeset -n arrayname

for arrayname in "${arrays[@]}"
do	for subscript in "${!arrayname[@]}"
	do	printf '%s[%s]=%s\n' "${!arrayname}" "$subscript" "${arrayname[$subscript]}"
	done
done

animals[0]=dog
animals[1]=cat
animals[2]=horse
animals[3]=penguin
animals[4]=cow
fruits[0]=orange
fruits[1]=apple
fruits[2]=grapes
fruits[3]=peach
fruits[4]=mango
drinks[0]=juice
drinks[1]=milk
drinks[2]=coffee
drinks[3]=tea
drinks[4]=coke
cities[0]=toronto
cities[1]=paris
cities[2]=london
cities[3]=glasgow
cities[4]=sydney
countries[0]=canada
countries[1]=france
countries[2]=england
countries[3]=scotland
countries[4]=australia
sparse[1]=first
sparse[10]=tenth
sparse[33]=thirty-third
sparse[100]=hundredth
associative[SomeOtherString]=Anything you might want
associative[a b]=A B
associative[x y z]=X Y Z

xfoo="abc"
yfoo="def"
selector="x"

echo ${${selector}foo}

xfoo="abc"
yfoo="def"
selector="x"

eval echo \${${selector}foo}

arr1[1]="arr1.1"
arr1[2]="arr1.2"
arr1[3]="arr1.3"
arr1[4]="arr1.4"

arr2[1]="arr2.1"
arr2[2]="arr2.2"
arr2[3]="arr2.3"
arr2[4]="arr2.4"

arr3[1]="arr3.1"
arr3[2]="arr3.2"
arr3[3]="arr3.3"
arr3[4]="arr3.4"


for i in 1 2 3 ; do
     for j in 1 2 3 4 ; do
         eval echo \${arr${i}[$j]}
     done
done

animals[0]=dog
fruits[0]=orange
drinks[0]=juice
cities[0]=toronto
countries[0]=canada

animals[1]=cat
fruits[1]=apple
drinks[1]=milk
cities[1]=paris
countries[1]=france

animals[2]=horse
fruits[2]=grapes
drinks[2]=coffee
cities[2]=london
countries[2]=england

animals[3]=penguin
fruits[3]=peach
drinks[3]=tea
cities[3]=glasgow
countries[3]=scotland

animals[4]=cow
fruits[4]=mango
drinks[4]=coke
cities[4]=sydney
countries[4]=australia

typeset -n j
for i in "${index[@]}" ; do    echo ${i};      for j in "${all[@]}" ; do echo ${!j}, ${j[$i]};         done; done
0
animals, dog
fruits, orange
drinks, juice
cities, toronto
countries, canada
1
animals, cat
fruits, apple
drinks, milk
cities, paris
countries, france
2
animals, horse
fruits, grapes
drinks, coffee
cities, london
countries, england
3
animals, penguin
fruits, peach
drinks, tea
cities, glasgow
countries, scotland
4
animals, cow
fruits, mango
drinks, coke
cities, sydney
countries, australia

for i in "${index[@]}" ; do    echo ${i};      for j in "${all[@]}" ; do eval echo \$j, \${$j[\$i]};   done; done
0
animals, dog
fruits, orange
drinks, juice
cities, toronto
countries, canada
1
animals, cat
fruits, apple
drinks, milk
cities, paris
countries, france
2
animals, horse
fruits, grapes
drinks, coffee
cities, london
countries, england
3
animals, penguin
fruits, peach
drinks, tea
cities, glasgow
countries, scotland
4
animals, cow
fruits, mango
drinks, coke
cities, sydney
countries, australia

abc@xyz$ ./loop.sh
./loop.sh: line 17: typeset: -n: invalid option
typeset: usage: typeset [-afFirtx] [-p] name[=value] ...
0
dog, animals
orange, fruits
juice, drinks
toronto, cities
canada, countries
1
dog,
orange,
juice,
toronto,
canada,
2
dog,
orange,
juice,
toronto,
canada,
3
dog,
orange,
juice,
toronto,
canada,
4
dog,
orange,
juice,
toronto,
canada,
abc@xyz$ bash --version
GNU bash, version 4.4.12(1)-release (x86_64-apple-darwin16.3.0)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

0
dog, animals

0
animals, dog

#!/bin/ksh
index=(0 1 2 3 4)
all=(animals fruits drinks cities countries)

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

typeset -n arrayname

separator=
for subscript in "${!index[@]}"
do	printf "$separator"
	separator='\n'
	for arrayname in "${all[@]}"
	do	printf '%s[%s]=%s\n' "${!arrayname}" "$subscript" "${arrayname[$subscript]}"
	done
done