In this article I will post some bash code examples

Retry function. Usage: retry 3 "Error message" some_other_function_to_be_executed_with_retries

function retry {
    local retries=$1
    shift
    local msg="$1"
    shift

    local count=0
    until "$@"; do
        exit=$?
        wait=$((2 ** $count))
        count=$(($count + 1))
        if [ $count -lt $retries ]; then
            echo "Retry $count/$retries exited $exit, retrying in $wait seconds..."
            sleep $wait
        else
            echo "Retry $count/$retries exited $exit, no more retries left."
            echo "$msg"
            return $exit
        fi
    done
    return 0
}