I have an array
declare -a her=("ger" "blr" "tyg" "")
for i in "${her[@]}"; do
echo $i
done
I get
ger
blr
tyg
But when I try and append to an array I get one long string with no spaces
declare -a you
#without quotes and with quotes
#' " same result
for i in {"fgt","fe","ger"}; do
you+=${i}
done
for i in "${you[@]}"; do
$i
done
Fgtfeger
Any insight on whats happening ? Kinda makes them not as useful
You have to append to an array using either the compound assignment syntax (e.g. foo=("elem1" ...) or an array index.
The form with parentheses allows you to insert one or more elements at a time, and is (arguably) easier to read. For example:
# start with a clean slate
unset you
for i in "fgt" "fe" "ger"; do
you+=("$i")
done
printf "%s\n" "${you[@]}"
This yields the values you'd expect:
fgt fe ger
You can get similar results by assigning to an index. For example:
unset you
for i in "fgt" "fe" "ger"; do
you[${#you[@]}]="$i"
done
printf "%s\n" "${you[@]}"
This second example works because Bash arrays are zero-indexed, so the length of the array is also the next available index that should be assigned when appending.
you+=("${i}").declare -p youfor additional clues.