try_x_times_function.sh

function try_x_times () {
    command="${1:-echo 'No command given.'}"
    tries="${2:-10}"
    delay="${3:-2}"

    # Preserve bash -e mode
    if [[ $SHELLOPTS =~ 'errexit' ]]; then
        errexit="true"
        set +e
    else
        errexit="false"
    fi

    until [[ ${tries} -le 0 ]]; do
        echo "Attempting to run command (${tries} left): \`${command}\`"
        eval ${command}
        retval=$?
        if [[ ${retval} -eq 0 ]]; then
            [[ ${errexit} = "true" ]] && set -e
            return 0
        fi
        let tries-=1
        sleep ${delay}
    done

    [[ ${errexit} = "true" ]] && set -e
    return ${retval}
}