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  1. 13 6月, 2015 1 次提交
    • core/commands/unixfs: Add 'ipfs unixfs ls ...' · 434871ba 
      This is similar to 'ipfs ls ...', but it:

* Lists file sizes that match the content size:

    $ ipfs --encoding=json unixfs ls /ipfs/QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4
    {
      "Objects": [
        {
          "Argument": "/ipfs/QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4",
          "Links": [
            {
              "Name": "busybox",
              "Hash": "QmPbjmmci73roXf9VijpyQGgRJZthiQfnEetaMRGoGYV5a",
              "Size": 1947624,
              "Type": 2
            }
          ]
        }
      ]
    }
    $ ipfs cat /ipfs/QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4/busybox | wc -c
    1947624

  'ipfs ls ...', on the other hand, is using the Merkle-descendant
  size, which also includes fanout links and the typing information
  unixfs objects store in their Data:

    $ ipfs --encoding=json ls /ipfs/QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4
    {
      "Objects": [
        {
          "Hash": "/ipfs/QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4",
          "Links": [
            {
              "Name": "busybox",
              "Hash": "QmPbjmmci73roXf9VijpyQGgRJZthiQfnEetaMRGoGYV5a",
              "Size": 1948128,
              "Type": 2
            }
          ]
        }
      ]
    }

* Has a simpler text output corresponding to POSIX ls [1]:

    $ ipfs unixfs ls /ipfs/QmV2FrBtvue5ve7vxbAzKz3mTdWq8wfMNPwYd8d9KHksCF/gentoo/stage3/amd64/2015-04-02
    bin
    dev
    etc
    proc
    run
    sys
    $ ipfs ls /ipfs/QmV2FrBtvue5ve7vxbAzKz3mTdWq8wfMNPwYd8d9KHksCF/gentoo/stage3/amd64/2015-04-02
    QmSRCHG21Sbqm3EJG9aEBo4vS7Fqu86pAjqf99MyCdNxZ4 1948183 bin/
    QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn 4       dev/
    QmUz1Z5jnQEjwr78fiMk5babwjJBDmhN5sx5HvPiTGGGjM 1207    etc/
    QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn 4       proc/
    QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn 4       run/
    QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn 4       sys/

  The minimal output allows us to start off with POSIX compliance and
  then add options (which may or may not be POSIX compatible) to
  adjust the output format as we get a better feel for what we need
  ([2] through [3]).

[1]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html
[2]: https://botbot.me/freenode/ipfs/2015-06-12/?msg=41724727&page=5
[3]: https://botbot.me/freenode/ipfs/2015-06-12/?msg=41725146&page=5

License: MIT
Signed-off-by: 's avatarW. Trevor King <wking@tremily.us>
      由 W. Trevor King 提交于
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