sccs-cvt(1) | Schily´s USER COMMANDS | sccs-cvt(1) |
sccs-cvt, sccscvt - convert SCCS history files between v4/v6
sccscvt [ options ] s.file1 .. s.filen
Sccscvt converts SCCS v4 history files (as introduced in February 1977) into SCCS v6 history files (as introduced in August 2011) and vice versa.
The first line, containing the SCCS magic number and the checksum is converted to the format that is appropriate. The time format in the delta table is converted by either removing the SCCS v6 extensions or by adding time zone information by assuming that all time stamps are from the local time zone. When converting from SCCS v6 to SCCS v4, the enhanced time stamp data is retained as the first delta comment line in a delta block.
SID specific SCCS v6 enhancements are converted into special delta comment to prevent information loss when converting to SCCS v4.
The SCCS v6 enhancements that are between the SCCS v4 flags indicated by ^Af and the SCCS comment block that is bracketed between ^At and ^AT are untouched as these enhancements are not flagged by historic SCCS versions and retained by historic SCCS versions when a history file is modified.
If a file argument refers to a directory, the directory is scanned for file names that start with ``s.'' and examines all these files.
This program is a SCHILY extension that does not exist in historic sccs implementations.
The bulk-spec parameter is composed from an optional list of flag parameters followed by an optional path specifier.
The following flag types are supported:
The following path specifier types are supported:
A typical value for dir is SCCS.
In order to overcome the limited number of exec(2) arguments, it is recommended to use `−' as the file name parameter for sccscvt(1) and to send a list of path names to
See environ(5) for descriptions of the following environment variables that affect the execution of sccscvt(1): LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned:
sccs(1), sccs-admin(1), sccs-cdc(1), sccs-comb(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), bdiff(1), diff(1), what(1), sccschangeset(4), sccsfile(4), attributes(5), environ(5), standards(5).
If a SCCS history file is converted from SCCS v4 to SCCS v6 and there is no retained SCCS v6 timestamp information in the delta comment, it may be a good idea to manually correct time zone information.
sccscvt(1) was originally written by Joerg Schilling in 2011 and is still maintained by Joerg Schilling.
A frequently updated source code for the SCCS suite is included in the schilytools project and may be retrieved from the schilytools project at Sourceforge at:
http://sourceforge.net/projects/schilytools/
The download directory is:
http://sourceforge.net/projects/schilytools/files/
Check for the schily-*.tar.bz2 archives.
Less frequently updated source code for the SCCS suite is at:
http://sourceforge.net/projects/sccs/files/
Separate project informations for the SCCS project may be retrieved from:
http://sccs.sf.net
2018/12/18 | Joerg Schilling |