10-03-2006
The + tells find to only run it once. It runs it like "tar -cf file.tar file1 file2", which includes both files in one archive, file.tar.
The version without the + runs tar twice, once for each file. tar does not automatically append, it replaces, so it replaces the first archive.
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LEARN ABOUT NETBSD
shape_tar
SHAPE_TAR(1) General Commands Manual SHAPE_TAR(1)
NAME
shape_tar - shapeTools RMS bundle up subsystem in a tar or shar archive
SYNOPSIS
shape tar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]
shape shar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]
DESCRIPTION
Shape tar and shape shar create a tar or a shar archive containing all source components of the current node in the system tree. All source
components listed in the COMPONENTS macro in the Makefile and the release identification file (VERSIONFILE) are written to the archive.
Components of subsystems are not included in the archive file.
The VERSIONS macro may be set to specify a version selection rule to be active during archive file creation. Default is most_recent,
selecting the most recent version of each component. See shape_stdrul(7) or the $(SHAPELIBPATH)/stdrules for other possible settings. You
may also use self defined version selection rules as VERSIONS.
ARCHIVE is the base name of the file where the output shall be written to. Default is $(SUBSYSTEMNAME). The output file gets the filename
extension .tar (resp. .shar). When ARCHIVE=- is given, data will be written to standard output.
SEE ALSO
shape_RMS(1), shape_stdrul(7)
FILES
$(SUBSYSTEMNAME).tar $(SUBSYSTEMNAME).shar
28.9.119 SHAPE_TAR(1)