Bash reading from a file to an associative array - arrays

Question

I'm trying to write a script in bash using an associative array.
I have a file called data:
a,b,c,d,e,f
g,h,i,j,k,l
The following script:
oldIFS=${IFS}
IFS=","
declare -A assoc
while read -a array
do
assoc["${array[0]}"]="${array[#]}"
done
for key in ${!assoc[#]}
do
echo "${key} ---> ${assoc[${key}]}"
done
IFS=${oldIFS}
gives me
a ---> a b c d e f
g ---> g h i j k l
I need my output to be:
a b ---> c d e f
g h ---> i j k l

Answer 1

oldIFS=${IFS}
IFS=","
declare -A assoc
while read -r -a array
do
assoc["${array[0]} ${array[1]}"]="${array[#]:2}"
done < data
for key in "${!assoc[#]}"
do
echo "${key} ---> ${assoc[${key}]}"
done
IFS=${oldIFS}
data:
a,b,c,d,e,f
g,h,i,j,k,l
Output:
a b ---> c d e f
g h ---> i j k l
Uses Substring Expansion here ${array[#]:2} to get substring needed as the value of the assoc array. Also added -r to read to prevent backslash to act as an escape character.
Improved based on #gniourf_gniourf's suggestions:
declare -A assoc
while IFS=, read -r -a array
do
((${#array[#]} >= 2)) || continue
assoc["${array[#]:0:2}"]="${array[#]:2}"
done < data
for key in "${!assoc[#]}"
do
echo "${key} ---> ${assoc[${key}]}"
done