前提：
一般情况下对OSS操作都会通过SDK，但是很多情况下对OSS进行简单的上传下载的操作，那么SDK就显得有些臃肿，先要下载sdk包，然后再写些简单的操作脚本，而通过shell脚本就会简单很多。
而且很多场景：线上网站、数据库等，生产出来的网站数据、数据库数据、日志数据都需要来备份，如果备份再本地磁盘，那么没过多久磁盘空间就占用光了，如果是NAS来备份数据，价格又比较贵，如果把数据备份到OSS 低频存储就比较实惠一些。
使用方法：
上传文件到OSS：PUT
#!/bin/bash
host="oss-cn-shanghai.aliyuncs.com" bucket="bucket名" Id="AccessKey ID" Key="Access Key Secret" osshost=$bucket.$host
source="localfilename" dest="objecetename"
resource="/${Bucket}/${dest}"
contentType=file -ib ${source} |awk -F ";" '{print $1}'
dateValue="TZ=GMT env LANG=en_US.UTF-8 date +'%a, %d %b %Y %H:%M:%S GMT'"
stringToSign="PUT\n\n${contentType}\n${dateValue}\n${resource}"
signature=echo -en $stringToSign | openssl sha1 -hmac ${Key} -binary | base64
url=http://${OssHost}/${dest} echo "upload ${source} to ${url}"
curl -i -q -X PUT -T "${source}"
-H "Host: ${OssHost}"
-H "Date: ${dateValue}"
-H "Content-Type: ${contentType}"
-H "Authorization: OSS ${Id}:${signature}"
${url}
下载OSS的文件：GET
#!/bin/bash
host="oss-cn-shanghai.aliyuncs.com" bucket="bucket名" Id="AccessKey ID" Key="Access Key Secret"
osshost=$bucket.$host
source="objecetename" dest="localfilename"
resource="/${bucket}/${source}"
contentType=""
dateValue="TZ=GMT env LANG=en_US.UTF-8 date +'%a, %d %b %Y %H:%M:%S GMT'"
stringToSign="GET\n\n${contentType}\n${dateValue}\n${resource}"
signature=echo -en $stringToSign | openssl sha1 -hmac ${Key} -binary | base64
url=http://${osshost}/${source} echo "download ${url} to ${dest}"
curl --create-dirs
-H "Host: ${osshost}"
-H "Date: ${dateValue}"
-H "Content-Type: ${contentType}"
-H "Authorization: OSS ${Id}:${signature}"
${url} -o ${dest}
原文地址： http://blog.daobidao.com/shell-put-get-oss.html
