File Formats                                     sccschangeset(4)


     sccschangeset - format of an SCCS changeset file


     An SCCS changeset file is an ASCII file consisting of a list
     of  entries  that  describe the state of a project-set under
     control of SCCSv6 or later.

     The changeset file itself is under control  of  SCCS.   SCCS
     works directly on the s.changeset file.  There is no need to
     check out the related file content, as  the  deltas  can  be
     consructed without explicitely running the diff(1) program.

     The following terms are used in this documentation:

     project set         A set of one or more files under control
                         of SCCS that form a project.

     project set home    A directory that is above all files from
                         the related project set.  This directory
                         holds a directory .sccs with project set
                         related  meta data such as the changeset

     commit set          A single set of changes into the reposi-
                         tory for a project set.

     committer           The person who formed a commit set.

     email address       The email address  used  to  identify  a

  File Format
     Each entry in the changeset file describes the new state  of
     a  single  file  after  it was modified, renamed, removed or
     restored in a related commit set.

     Each entry in the changeset file ends in a  newline  charac-
     ter.  If the file name from the related file contains a new-
     line character, additional newlines may be  in  the  related

     Each entry in the changeset file consists of six fields that
     are  separated  by  a  vertical line character (ASCII 0x7C).
     The vertical line character may not be  part  of  the  email
     address, it however may appear in the path name.

Joerg Schilling      Last change: 2015/02/25                    1

File Formats                                     sccschangeset(4)

     The following fields appear in the order  of  the  following

          urand          A unified pseudo random number  that  is
                         used  to  help  to identify single files
                         across renames during  the  lifetime  of
                         the  sccs  history.   The unified random
                         number is unique to any  file  from  the
                         project  set.   See  sccsfile(4)  for  a
                         detailed  description  of  the   unified
                         pseudo random number.

                         The minimal length for the pseudo random
                         number  is  thirteen hexadecimal charac-
                         ters. If the number could be represented
                         with less digits, it is left filled with
                         zeroes. This allows  to  have  a  unique
                         length    for    this    number    until
                         Mar 31 10:55:07 2155 GMT.

          sid            The file specific SID that was used  for
                         the  file  mentioned in that line of the

          sid-sum        The  SID  specific  checksum   for   the
                         related  file.   See  sccsfile(4)  for a
                         detailed description of the SID specific
                         checksums for a file.

          path length    A decimal number representing the number
                         of  bytes in the path name not including
                         the final newline character.

          path name      The path name of the related file  after
                         the  commit  has been applied.  The path
                         name holds a relative path as seen  from
                         the  project set home directory.  As the
                         path name is  the  last  member  in  the
                         lines  of  a changeset file, it may con-
                         tain the vertical line character  (ASCII

     A typical entry in the changeset file may look like:



     sccs(1),    sccs-admin(1),    sccs-cdc(1),     sccs-comb(1),
     sccs-cvt(1),   sccs-delta(1),   sccs-get(1),   sccs-help(1),
     sccs-log(1),   sccs-prs(1),   sccs-prt(1),    sccs-rmdel(1),
     sccs-sact(1),  sccs-sccsdiff(1), sccs-unget(1), sccs-val(1),

Joerg Schilling      Last change: 2015/02/25                    2

File Formats                                     sccschangeset(4)

     bdiff(1), diff(1), what(1), sccsfile(4).




Joerg Schilling      Last change: 2015/02/25                    3

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