Passing arrays in to the function in bash script

Question

I am new to bash script and writing the bash script. I have declared an array and i have given the values. But When i pass the array in the loop values are not getting inside the loop. Below is my code

 declare -a files=( "A1S0" "D1S0" "D2S0" "D3S0" "D4S0" "D5S0" "D6S0" )   

     command_to_get_filesizes() {


        for i in ${#files[@]}; do
         echo test
        echo "${files[@]}"
        echo files[$i]

        echo  $(date +%m)
        aws s3api list-objects --bucket ui-dl-weather-ecmwf-ltf --prefix daily/ --query "Contents[?contains(Key, 'files[$i]$(date +%m%d)')]" --output text | awk '{print $2, $4}' >> "$FILESIZE"
        }
  command_to_get_filesizes()

Can u pls help me on this.. 'files[$i]$(date +%m%d)' array values should come in this place

eg: 'A1S0[$i]$(date +%m%d)'

Add a shebang and then paste your script there: shellcheck.net — Cyrus
– Cyrus, Commented May 22, 2020 at 7:58

user1934428 · Accepted Answer · 2020-05-22 07:36:55Z

1

Wrong syntax. What is the # doing there? Correct would be

 for i in "${files[@]}"; do

    echo Processing file $i
    .... 
    aws s3api list-objects --bucket ui-dl-weather-ecmwf-ltf --prefix daily/ --query "Contents[?contains(Key, '$i$(date +%m%d)')]" --output text | awk '{print $2, $4}' >> "$FILESIZE"

 done

answered May 22, 2020 at 7:36

user1934428

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3 Comments

Kanagam bala Over a year ago

As suggested above, i tried, but $i is not printing anything... Can u pls help me on this

Kanagam bala Over a year ago

$i is printing the values as 1,2,3,4 instaed of values in the array

user1934428 Over a year ago

It does not, as you can easily see by trying out this code in a bash command line: declare -a files=( "A1S0" "D1S0" "D2S0"); for i in "${files[@]}"; do echo $i; done. Make sure to really copy and paste what I wrote.

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