2026-03-12 00:52:47 -04:00
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Command-Line Usage
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==================
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Synopsis
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--------
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.. code-block:: none
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uc2 [options] archive.uc2 [patterns...]
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2026-03-12 02:04:13 -04:00
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uc2 -w [-L level] archive.uc2 files...
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2026-03-12 00:52:47 -04:00
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Modes
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-----
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``uc2 archive.uc2``
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Extract all files to the current directory.
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``uc2 -l archive.uc2``
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List archive contents.
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``uc2 -t archive.uc2``
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Test archive integrity (decompress and verify checksums without
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writing files).
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``uc2 -p archive.uc2 filename``
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Extract a file to stdout.
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2026-03-12 02:04:13 -04:00
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``uc2 -w archive.uc2 files...``
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Create a new archive from the given files. The original LZ77+Huffman
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algorithm is used. Compression level defaults to 4 (Tight); use
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``-L`` to change it.
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2026-03-12 00:52:47 -04:00
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Options
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-------
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.. list-table::
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:header-rows: 1
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:widths: 15 85
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* - Flag
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- Description
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* - ``-l``
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- List archive contents
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* - ``-t``
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- Test archive integrity
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* - ``-w``
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- Create archive
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* - ``-L n``
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- Compression level: 2 = Fast, 3 = Normal, 4 = Tight (default),
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5 = Ultra
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* - ``-a``
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- Include all file versions (not just latest)
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* - ``-d path``
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- Extract to specified directory
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* - ``-f``
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- Overwrite existing files
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* - ``-p``
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- Extract to stdout
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* - ``-D``
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- Skip directory metadata; ``-DD`` also skips file metadata
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* - ``-T``
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- Tab-separated output (for scripting)
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Pattern Matching
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----------------
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File patterns use glob syntax. Only files matching the pattern are
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listed or extracted:
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.. code-block:: sh
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uc2 -l archive.uc2 '*.txt' # List only .txt files
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uc2 archive.uc2 'src/*' # Extract src/ subtree
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Exit Codes
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----------
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.. list-table::
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:widths: 15 85
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* - ``0``
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- Success
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* - ``1``
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- Error (damaged archive, I/O failure, etc.)
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