This is the command git-annex-lookupkey that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
git-annex-lookupkey - looks up key used for file
git annex lookupkey [file ...]
This plumbing-level command looks up the key used for a file in the index. The key is
output to stdout. If there is no key (because the file is not present in the index, or is
not a git-annex managed file), nothing is output, and it exits nonzero.
Enable batch mode, in which a line containing the filename is read from stdin, the
key is output to stdout (with a trailing newline), and repeat.
Note that if there is no key corresponding to the file, an empty line is output to
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