windows 从 aws s3、cp 或同步下载文件夹？
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Downloading folders from aws s3, cp or sync?
提问by BFlint
If I want to download all the contents of a directory on S3 to my local PC, which command should I use cp or sync ?
如果我想将 S3 上目录的所有内容下载到我的本地 PC，我应该使用哪个命令 cp 或 sync ？
Any help would be highly appreciated.
任何帮助将不胜感激。
For example,
例如，
if I want to download all the contents of "this folder" to my desktop, would it look like this ?
如果我想将“此文件夹”的所有内容下载到我的桌面，会是这样吗？
aws s3 sync s3://"myBucket"/"this folder" C:\Users\Desktop
回答by John Rotenstein
Using aws s3 cpfrom the AWS Command-Line Interface (CLI)will require the --recursiveparameter to copy multiple files.
使用aws s3 cp从AWS命令行界面（CLI）将要求--recursive参数来复制多个文件。
aws s3 cp s3://myBucket/dir localdir --recursive
The aws s3 synccommand will, by default, copy a whole directory. It will only copy new/modified files.
aws s3 sync默认情况下，该命令将复制整个目录。它只会复制新的/修改过的文件。
aws s3 sync s3://mybucket/dir localdir
Just experiment to get the result you want.
只需尝试即可获得您想要的结果。
Documentation:
文档：
回答by myPavi
In case you need to use another profile, especially cross account. you need to add the profile in the config file
如果您需要使用其他配置文件，尤其是跨帐户。您需要在配置文件中添加配置文件
[profile profileName]
region = us-east-1
role_arn = arn:aws:iam::XXX:role/XXXX
source_profile = default
and then if you are accessing only a single file
然后如果你只访问一个文件
aws s3 cp s3://crossAccountBucket/dir localdir --profile profileName
回答by gCoh
In the case you want to download a single file, you can try the following command:
如果您想下载单个文件，可以尝试以下命令：
aws s3 cp s3://bucket/filename /path/to/dest/folder
回答by Marc Duby
Just used version 2 of the AWS CLI. For the s3 option, there is also a --dryrun option now to show you what will happen:
刚刚使用了 AWS CLI 的第 2 版。对于 s3 选项，现在还有一个 --dryrun 选项来显示会发生什么：
aws s3 --dryrun cp s3://bucket/filename /path/to/dest/folder --recursive
aws s3 --dryrun cp s3://bucket/filename /path/to/dest/folder --recursive
