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| Chapter 17 The SCCS Utility |

## comb

    comb [options] files

Reduce the size of the specified SCCS `files`. This is done by pruning selected deltas and combining those that remain, thereby reconstructing the SCCS file. The default behavior prunes all but the most recent delta in a particular branch and keeps only those ancestors needed to preserve the tree structure. comb produces a shell script on standard output. Actual reconstruction of the SCCS files is done by running the script.

### Options

-c`list`

  Preserve only those deltas whose SCCS IDs are specified in the comma-separated `list`. Use a hyphen (-) to supply a range; e.g., 1.3,2.1-2.5.

-o

  Access the reconstructed `file` at the release number of the delta that is created, instead of at the most recent ancestor. This option may change the tree structure.

-p`sid`

  In reconstructing `file`, discard all deltas whose SCCS identification string is older than `sid`.

-s

  Generate a shell script that calculates how much the file has been reduced in size. -s is useful as a preview of what comb will do when actually run.

Reference: cdc |  | Reference: delta