在无需下载文件夹的情况下，上传文件到指定文件夹

1.首先，我们创建 IPFS 对象 - 一个包含文件的文件夹hello/lorem.txt- 它的CID为 IDQmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3

ipfs@privex:~$ mkdir hello
ipfs@privex:~$ echo -e "lorem ipsum dolor\nlorem ipsum dolor\n" > hello/lorem.txt

ipfs@privex:~$ ipfs add -p -r -w hello
added Qme85tx5Wnsjc5pZZs1JGogBNUVM2WThC18ERh6t2YFJSK hello/lorem.txt
added QmWRsWoZjiandZUXLyczXSoWi84hXNHvBQ49BiQx9hPdjs hello
added QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3
 37 B / 37 B [=======================================================================] 100.00%

ipfs@privex:~$ ipfs ls QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3
QmWRsWoZjiandZUXLyczXSoWi84hXNHvBQ49BiQx9hPdjs - hello/

ipfs@privex:~$ ipfs ls QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3/hello
Qme85tx5Wnsjc5pZZs1JGogBNUVM2WThC18ERh6t2YFJSK 37 lorem.txt

2.接下来，创建一个不属于hello文件夹的外部对象 ID，我创建了foo.txt包含几行随机文本，并将其上传到 IPFS。它的对象 ID 是QmaDDLFL3fM4sQkQfV82LdNqtNnyaeAmgC46Qc7FDQdkq8

ipfs@privex:~$ echo -e "foo bar foo bar foo foo foo\nbar foo foo bar bar foo bar\n" > foo.txt

ipfs@privex:~$ ipfs add foo.txt
added QmaDDLFL3fM4sQkQfV82LdNqtNnyaeAmgC46Qc7FDQdkq8 foo.txt
 57 B / 57 B [======================================================================] 100.00%

3.最后，我们将创建的对象添加到IPFS上创建的hello文件夹内。

命令语法是：ipfs object patch add-link [object-to-add-to] [name-of-newly-added-file-or-folder] [object-to-inject]
现在的CID为：
foo.txt：QmaDDLFL3fM4sQkQfV82LdNqtNnyaeAmgC46Qc7FDQdkq8
hello/：QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3
则命令为:
ipfs object patch add-link QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3 hello/foo.txt QmaDDLFL3fM4sQkQfV82LdNqtNnyaeAmgC46Qc7FDQdkq8

ipfs@privex:~$ ipfs object patch add-link QmXCfnzXHThHwaTvSSAKeErxK48XkyVoL6ZNEhkpKmZyW3 hello/foo.txt QmaDDLFL3fM4sQkQfV82LdNqtNnyaeAmgC46Qc7FDQdkq8
QmaWoYZnSXnKqzskrBwtmZPE74qKe4AF5YfwaY83nzeCCL

它输出一个新的 ID：QmaWoYZnSXnKqzskrBwtmZPE74qKe4AF5YfwaY83nzeCCL，它既包含hello/lorem.txt原始文件，又包含hello/foo.txt后来加入的文件。

参考：IPFS: How to add a file to an existing folder?