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> .\" $FreeBSD: head/share/man/man7/build.7 148330 2005-07-23 14:23:30Z netchild $
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> .Dd July 23, 2005
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> .It Cm delete-old
> Delete obsolete base system files and directories interactively.
> When -DBATCH_DELETE_OLD_FILES is specified at the command line,
> the delete operation will be non-interactively.
> .It Cm delete-old-libs
> Delete obsolete base system libraries interactively.
> This should only be used if no 3rd party software uses the libraries anymore.
> When -DBATCH_DELETE_OLD_FILES is specified at the command line,
> the delete operation will be non-interactively.