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GDA

Adding Data

Adding Files

Section titled “Adding Files”
Terminal window
gda add bids/sub-01/meg/run-01.fif
gda add sub-02/beh/data.csv

Adding Directories

Section titled “Adding Directories”

GDA walks directories recursively:

Terminal window
gda add sub-01/
gda add bids/

Skips symlinks and directories automatically.

Add All

Section titled “Add All”
Terminal window
gda add .

Adds every file in the repository. Excludes .gda/ automatically.

What Happens

Section titled “What Happens”

When you add a file, GDA:

  1. Computes its SHA256 hash while writing to the object store (single pass)
  2. Stores the object in .gda/objects/XX/YYY... (read-only, 0444 permissions)
  3. Replaces the original with a relative symlink to the object
  4. Records the path→hash mapping in the index

Deduplication

Section titled “Deduplication”

Identical content is stored once. If two files have the same hash, they share the same object in the store.