在bash-scrip中使用for循环来迭代csv文件中的扩展名，以便从NASA下载数据

Question

我目前正在尝试从(https://ladsweb.modaps.eosdis.nasa.gov/search/order)。它们提供了一个bash文件(https://ladsweb.modaps.eosdis.nasa.gov/tools-and-services/data-download-scripts/)我需要尝试并编辑。我有一个.csv文件，里面有我需要下载的所有文件扩展名(特别是我需要2015年到现在中国的所有VNP46A1数据。

在伪代码形式中，我想添加以下内容：

FOR url_path IN url_list:
recurse "https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/5000/VNP46A1/“+”$url_path"+”.h5" “your_directory”+”$url_path" "TOKEN_HERE"

我需要编辑这个bash来迭代csv中的文件，并将它们下载到一个文件夹中以供以后使用。

bash文件如下：

#!/bin/bash
function usage {
echo "Usage:"
echo "  $0 [options]"
echo ""
echo "Description:"
echo "  This script will recursively download all files if they don't exist"
echo "  from a LAADS URL and stores them to the specified path"
echo ""
echo "Options:"
echo "    -s|--source [URL]         Recursively download files at [URL]"
echo "    -d|--destination [path]   Store directory structure to [path]"
echo "    -t|--token [token]        Use app token [token] to authenticate"
echo ""
echo "Dependencies:"
echo "  Requires 'jq' which is available as a standalone executable from"
echo "  https://stedolan.github.io/jq/download/"
}
function recurse {
local src=$1
local dest=$2
local token=$3
echo "Querying ${src}.json"
for dir in $(curl -s -H "Authorization: Bearer ${token}" ${src}.json | jq '.[] | select(.size==0) | .name' | tr -d '"')
do
echo "Creating ${dest}/${dir}"
mkdir -p "${dest}/${dir}"
echo "Recursing ${src}/${dir}/ for ${dest}/${dir}"
recurse "${src}/${dir}/" "${dest}/${dir}"
done
for file in $(curl -s -H "Authorization: Bearer ${token}" ${src}.json | jq '.[] | select(.size!=0) | .name' | tr -d '"')
do
if [ ! -f ${dest}/${file} ] 
then
echo "Downloading $file to ${dest}"
# replace '-s' with '-#' below for download progress bars
curl -s -H "Authorization: Bearer ${token}" ${src}/${file} -o ${dest}/${file}
else
echo "Skipping $file ..."
fi
done
}
POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
-s|--source)
src="$2"
shift # past argument
shift # past value
;;
-d|--destination)
dest="$2"
shift # past argument
shift # past value
;;
-t|--token)
token="$2"
shift # past argument
shift # past value
;;
*)    # unknown option
POSITIONAL+=("$1") # save it in an array for later
shift # past argument
;;
esac
done
if [ -z ${src+x} ]
then 
echo "Source is not specified"
usage
exit 1
fi
if [ -z ${dest+x} ]
then 
echo "Destination is not specified"
usage
exit 1
fi
if [ -z ${token+x} ]
then 
echo "Token is not specified"
usage
exit 1
fi
recurse "$src" "$dest" "$token"

并且一个缩短的(用于测试目的(csv文件被给出为：

/archive/allData/5000/VNP46A1/2015/001/VNP46A1.A2015001.h30v05.001.2019135185504.h5
/archive/allData/5000/VNP46A1/2015/002/VNP46A1.A2015002.h30v05.001.2019136091632.h5
/archive/allData/5000/VNP46A1/2015/003/VNP46A1.A2015003.h30v05.001.2019136075625.h5
/archive/allData/5000/VNP46A1/2015/004/VNP46A1.A2015004.h30v05.001.2019136081706.h5
/archive/allData/5000/VNP46A1/2015/005/VNP46A1.A2015005.h30v05.001.2019136084155.h5
/archive/allData/5000/VNP46A1/2015/006/VNP46A1.A2015006.h30v05.001.2019136084128.h5
/archive/allData/5000/VNP46A1/2015/007/VNP46A1.A2015007.h30v05.001.2019136085336.h5
/archive/allData/5000/VNP46A1/2015/008/VNP46A1.A2015008.h30v05.001.2019136103147.h5
/archive/allData/5000/VNP46A1/2015/009/VNP46A1.A2015009.h30v05.001.2019136100110.h5

如有任何帮助或建议，我们将不胜感激。

问候

Answer 1

您想要创建一个bash脚本，该脚本将使用NASA提供的脚本在每一行上循环以下载所需的数据。

例如，假设下面的脚本是一个名为save-data.sh:的文件

#!/bin/bash
while read p; do
./laads-data-download.sh -s $P -d "destination" -t "token"
echo "$p"
done <paths.txt

示例树结构：

nasa-satellite-data
├── laads-data-download.sh
├── paths.txt
└── save-data.sh