I'm trying to use redirection (learning purposes) and was wondering how i can reference this array so i can iterate through it. i know there are other ways but i'm trying to stick with redirection.
#!/bin/bash
count=0
for i in 10.10.{0..255}.{0..255}
do
ips[$count]=$i
let count+=1
done
echo -e "$count = count\n" #test code for amount
#problem code: trying to feed the array to the while loop via redirection
while read $element; do
echo -en "$element\n"
done < ${ips[@]}
Use <<< to redirect a string (vice < which accepts file names). This is not the most natural way to loop over an array: you also have to use read -d' ' to split on spaces instead of on newlines.
while read -d' ' $element; do
echo -en "$element\n"
done <<< "${ips[@]}"
For comparison, the more idiomatic way of looping over an array would be:
for ip in "${ips[@]}"; do
echo -en "$ip\n"
done
Also, for what it's worth, you could simplify the first loop to:
for i in 10.10.{0..255}.{0..255}; do
ips+=($i)
done
Or even simply:
ips=(10.10.{0..255}.{0..255})
${#ips[@]}
${ips[@]} is the list of addresses and ${#ips[@]} is the count.