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Kevin Atkinson authored
The "-u" option depends on GNU tar and will do the incorrect thing with BSD tar. Thus, try to find "gtar" and use it if available, if not use bsd tar and print a warning if the rarely used "-u" option is used.
086192ef
The "-u" option depends on GNU tar and will do the incorrect thing with BSD tar. Thus, try to find "gtar" and use it if available, if not use bsd tar and print a warning if the rarely used "-u" option is used.