Provided by: tarlz_0.25-2_amd64 
NAME
tarlz - creates tar archives with multimember lzip compression
SYNOPSIS
tarlz operation [options] [files]
DESCRIPTION
Tarlz is a massively parallel (multi-threaded) combined implementation of the tar archiver and the lzip
compressor. Tarlz uses the compression library lzlib.
Tarlz creates tar archives using a simplified and safer variant of the POSIX pax format compressed in
lzip format, keeping the alignment between tar members and lzip members. The resulting multimember tar.lz
archive is backward compatible with standard tar tools like GNU tar, which treat it like any other tar.lz
archive. Tarlz can append files to the end of such compressed archives.
Keeping the alignment between tar members and lzip members has two advantages. It adds an indexed lzip
layer on top of the tar archive, making it possible to decode the archive safely in parallel. It also
minimizes the amount of data lost in case of corruption.
The tarlz file format is a safe POSIX-style backup format. In case of corruption, tarlz can extract all
the undamaged members from the tar.lz archive, skipping over the damaged members, just like the standard
(uncompressed) tar. Moreover, the option '--keep-damaged' can be used to recover as much data as possible
from each damaged member, and lziprecover can be used to recover some of the damaged members.
Operations:
--help display this help and exit
-V, --version
output version information and exit
-A, --concatenate
append archives to the end of an archive
-c, --create
create a new archive
-d, --diff
find differences between archive and file system
--delete
delete files/directories from an archive
-r, --append
append files to the end of an archive
-t, --list
list the contents of an archive
-x, --extract
extract files/directories from an archive
-z, --compress
compress existing POSIX tar archives
--check-lib
check version of lzlib and exit
OPTIONS
-B, --data-size=<bytes>
set target size of input data blocks [2x8=16 MiB]
-C, --directory=<dir>
change to directory <dir>
-f, --file=<archive>
use archive file <archive>
-h, --dereference
follow symlinks; archive the files they point to
-n, --threads=<n>
set number of (de)compression threads [2]
-o, --output=<file>
compress to <file> ('-' for stdout)
-p, --preserve-permissions
don't subtract the umask on extraction
-q, --quiet
suppress all messages
-v, --verbose
verbosely list files processed
-0 .. -9
set compression level [default 6]
--uncompressed
don't compress the archive created
--asolid
create solidly compressed appendable archive
--bsolid
create per block compressed archive (default)
--dsolid
create per directory compressed archive
--no-solid
create per file compressed archive
--solid
create solidly compressed archive
--anonymous
equivalent to '--owner=root --group=root'
--owner=<owner>
use <owner> name/ID for files added to archive
--group=<group>
use <group> name/ID for files added to archive
--exclude=<pattern>
exclude files matching a shell pattern
--ignore-ids
ignore differences in owner and group IDs
--ignore-metadata
compare only file size and file content
--ignore-overflow
ignore mtime overflow differences on 32-bit
--keep-damaged
don't delete partially extracted files
--missing-crc
exit with error status if missing extended CRC
--mtime=<date>
use <date> as mtime for files added to archive
--out-slots=<n>
number of 1 MiB output packets buffered [64]
--warn-newer
warn if any file is newer than the archive
If no archive is specified, tarlz tries to read it from standard input or write it to standard output.
Exit status: 0 for a normal exit, 1 for environmental problems (file not found, files differ, invalid
command-line options, I/O errors, etc), 2 to indicate a corrupt or invalid input file, 3 for an internal
consistency error (e.g., bug) which caused tarlz to panic.
REPORTING BUGS
Report bugs to lzip-bug@nongnu.org Tarlz home page: http://www.nongnu.org/lzip/tarlz.html
COPYRIGHT
Copyright © 2024 Antonio Diaz Diaz. Using lzlib 1.14-rc1 License GPLv2+: GNU GPL version 2 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent
permitted by law.
SEE ALSO
The full documentation for tarlz is maintained as a Texinfo manual. If the info and tarlz programs are
properly installed at your site, the command
info tarlz
should give you access to the complete manual.