How to iterate through array in bash? [duplicate]

Question

I have written some script in bash but it won't work. Can anybody help me with this. I am providing the script here:

#!/bin/bash
declare -a array=("red" "blue" "green" "yellow")

for (( i=0; i<${array[@]}; i++));
do
        echo "items: $i"
done

I want to iterate through the array. Coz when ever I do it I'm getting an error saying:: arr1.sh: 2: Syntax error: "(" unexpected

Use ${#array[@]} inside the (( ))

Jetchisel
– Jetchisel

2021-11-19 11:25:03 +00:00
Commented Nov 19, 2021 at 11:25 — Jetchisel
– Jetchisel, Commented Nov 19, 2021 at 11:25
Sure you're using bash to execute your script and not sh?

Shawn
– Shawn

2021-11-19 11:43:34 +00:00
Commented Nov 19, 2021 at 11:43 — Shawn
– Shawn, Commented Nov 19, 2021 at 11:43
Check this comment about "'s around the array syntax

0stone0
– 0stone0

2021-11-19 14:46:14 +00:00
Commented Nov 19, 2021 at 14:46 — 0stone0
– 0stone0, Commented Nov 19, 2021 at 14:46

Halley Oliveira · Accepted Answer · 2021-11-19 14:38:47Z

7

Try this:

$ cat iterate_array.sh 
#!/bin/bash
declare -a array=("red" "blue" "green" "yellow")
for  i in ${!array[@]}; do
        echo ${array[$i]}
done
$ ./iterate_array.sh 
red
blue
green
yellow

Is that what you want?

answered Nov 19, 2021 at 14:38

Halley Oliveira

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