X-Git-Url: https://git.brokenzipper.com/gitweb?a=blobdiff_plain;f=doc%2Ftar.texi;h=b4bb450abd405f53328a758f9765e05abd1be05e;hb=643e3f244170eb0edcdcb237c45bb8756785e047;hp=621ce6063071ae0d83f6d16150e06010269a38b4;hpb=49ea4c50575f66e8f0450e463e1d882eed6255ec;p=chaz%2Ftar

diff --git a/doc/tar.texi b/doc/tar.texi
index 621ce60..b4bb450 100644
--- a/doc/tar.texi
+++ b/doc/tar.texi
@@ -2009,7 +2009,7 @@ attention to them.
 Each option has at least one @dfn{long} (or @dfn{mnemonic}) name starting with two
 dashes in a row, e.g., @option{--list}.  The long names are more clear than
 their corresponding short or old names.  It sometimes happens that a
-single long option has many different different names which are
+single long option has many different names which are
 synonymous, such as @option{--compare} and @option{--diff}.  In addition,
 long option names can be given unique abbreviations.  For example,
 @option{--cre} can be used in place of @option{--create} because there is no
@@ -2505,6 +2505,11 @@ patterns in the file @var{file}.  @xref{exclude}.
 Automatically excludes all directories
 containing a cache directory tag.  @xref{exclude}.
 
+@opsummary{exclude-tag}
+@item --exclude-tag=@var{file}
+
+Exclude all directories, containing file named @var{file}.  @xref{exclude}.
+
 @opsummary{file}
 @item --file=@var{archive}
 @itemx -f @var{archive}
@@ -6481,6 +6486,38 @@ Various applications write cache directory tags into directories they
 use to hold regenerable, non-precious data, so that such data can be
 more easily excluded from backups.
 
+@findex exclude-tag
+Another option, @option{--exclude-tag}, provides a generalization of
+this concept.  It takes a single argument, a file name to look for.
+Any directory that contains this file will be excluded from the dump.
+
+@table @option
+@opindex exclude-tag
+@item --exclude-tag=@var{file}
+Causes @command{tar} to ignore directories containing @var{file}.
+Multiple @option{--exclude-tag} options can be given.
+@end table
+
+For example:
+
+@smallexample
+$ @kbd{find dir}
+dir
+dir/blues
+dir/jazz
+dir/folk
+dir/folk/tagfile
+$ @kbd{tar -cf archive.tar --exclude-tag=tagfile -v}
+dir/
+dir/blues
+dir/jazz
+./tar: dir/folk/: contains a cache directory tag tagfile; not dumped
+$ @kbd{tar -tf archive.tar}
+dir/
+dir/blues
+dir/jazz
+@end smallexample
+
 @menu
 * problems with exclude::
 @end menu