maint: also distribute a zip-compressed tarball

[debian/gzip] / gzip.1

diff --git a/gzip.1 b/gzip.1
index 07995ea99366a1ae049e1e79168804b099734a62..ffc804164c04c0a8481b60285df0642cc543e94f 100644 (file)
--- a/gzip.1
+++ b/gzip.1
@@ -31,8 +31,6 @@ each file is replaced by one with the extension
 .BR "\&.gz" ,
 while keeping the same ownership modes, access and modification times.
 (The default extension is
-.B "\-gz"
-for VMS,
 .B "z"
 for MSDOS, OS/2 FAT, Windows NT FAT and Atari.)
 If no files are specified, or if a file name is "-", the standard input is
@@ -58,7 +56,7 @@ keeps the original file name and timestamp in the compressed file. These
 are used when decompressing the file with the
 .B \-N
 option. This is useful when the compressed file name was truncated or
-when the time stamp was not preserved after a file transfer.
+when the timestamp was not preserved after a file transfer.
 .PP
 Compressed files can be restored to their original form using
 .I gzip -d
@@ -240,7 +238,7 @@ displayed:
 
     method: compression method
     crc: the 32-bit CRC of the uncompressed data
-    date & time: time stamp for the uncompressed file
+    date & time: timestamp for the uncompressed file
 
 The compression methods currently supported are deflate, compress, lzh
 (SCO compress -H) and pack.  The crc is given as ffffffff for a file
@@ -259,20 +257,20 @@ Display the
 license and quit.
 .TP
 .B \-n --no-name
-When compressing, do not save the original file name and time stamp by
+When compressing, do not save the original file name and timestamp by
 default. (The original name is always saved if the name had to be
 truncated.) When decompressing, do not restore the original file name
 if present (remove only the
 .I gzip
 suffix from the compressed file name) and do not restore the original
-time stamp if present (copy it from the compressed file). This option
+timestamp if present (copy it from the compressed file). This option
 is the default when decompressing.
 .TP
 .B \-N --name
-When compressing, always save the original file name and time stamp; this
+When compressing, always save the original file name and timestamp; this
 is the default. When decompressing, restore the original file name and
-time stamp if present. This option is useful on systems which have
-a limit on file name length or when the time stamp has been lost after
+timestamp if present. This option is useful on systems which have
+a limit on file name length or when the timestamp has been lost after
 a file transfer.
 .TP
 .B \-q --quiet
@@ -296,6 +294,12 @@ are transferred to other systems.
 When decompressing, add .suf to the beginning of the list of
 suffixes to try, when deriving an output file name from an input file name.
 .TP
+.B --synchronous
+Use synchronous output.  With this option,
+.I gzip
+is less likely to lose data during a system crash, but it can be
+considerably slower.
+.TP
 .B \-t --test
 Test. Check the compressed file integrity.
 .TP
@@ -322,6 +326,11 @@ indicates the slowest compression method (best compression).
 The default compression level is
 .BR \-6
 (that is, biased towards high compression at expense of speed).
+.TP
+.B \-\-rsyncable
+When you synchronize a compressed file between two computers, this option allows rsync to transfer only files that were changed in the archive instead of the entire archive.
+Normally, after a change is made to any file in the archive, the compression algorithm can generate a new version of the archive that does not match the previous version of the archive. In this case, rsync transfers the entire new version of the archive to the remote computer.
+With this option, rsync can transfer only the changed files as well as a small amount of metadata that is required to update the archive structure in the area that was changed.
 .SH "ADVANCED USAGE"
 Multiple compressed files can be concatenated. In this case,
 .I gunzip
@@ -392,9 +401,6 @@ containing the following:
       #! /bin/sh
       export PATH=/usr/bin
       exec gzip \-9 "$@"
-
-On VMS, the name of the obsolescent environment variable is GZIP_OPT, to
-avoid a conflict with the symbol set for invocation of the program.
 .SH "SEE ALSO"
 znew(1), zcmp(1), zmore(1), zforce(1), gzexe(1), zip(1), unzip(1), compress(1)
 .PP
@@ -493,7 +499,7 @@ the default compression level (-6). On some highly redundant files,
 compresses better than
 .IR gzip .
 .SH "COPYRIGHT NOTICE"
-Copyright \(co 1998-1999, 2001-2002, 2012, 2015-2016 Free Software Foundation,
+Copyright \(co 1998-1999, 2001-2002, 2012, 2015-2017 Free Software Foundation,
 Inc.
 .br
 Copyright \(co 1992, 1993 Jean-loup Gailly