1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1.
.TH TARLZ "1" "July 2020" "tarlz 0.17" "User Commands"
.SH NAME
tarlz \- creates tar archives with multimember lzip compression
.SH SYNOPSIS
.B tarlz
[\fI\,options\/\fR] [\fI\,files\/\fR]
.SH DESCRIPTION
Tarlz is a massively parallel (multi\-threaded) combined implementation of
the tar archiver and the lzip compressor. Tarlz creates, lists and extracts
archives in a simplified and safer variant of the POSIX pax format
compressed with lzip, keeping the alignment between tar members and lzip
members. The resulting multimember tar.lz archive is fully 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.
.PP
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.
.PP
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.
.SH OPTIONS
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
output version information and exit
.TP
\fB\-A\fR, \fB\-\-concatenate\fR
append archives to the end of an archive
.TP
\fB\-B\fR, \fB\-\-data\-size=\fR<bytes>
set target size of input data blocks [2x8=16 MiB]
.TP
\fB\-c\fR, \fB\-\-create\fR
create a new archive
.TP
\fB\-C\fR, \fB\-\-directory=\fR<dir>
change to directory <dir>
.TP
\fB\-d\fR, \fB\-\-diff\fR
find differences between archive and file system
.TP
\fB\-\-ignore\-ids\fR
ignore differences in owner and group IDs
.TP
\fB\-\-delete\fR
delete files/directories from an archive
.TP
\fB\-\-exclude=\fR<pattern>
exclude files matching a shell pattern
.TP
\fB\-f\fR, \fB\-\-file=\fR<archive>
use archive file <archive>
.TP
\fB\-h\fR, \fB\-\-dereference\fR
follow symlinks; archive the files they point to
.TP
\fB\-\-mtime=\fR<date>
use <date> as mtime for files added to archive
.TP
\fB\-n\fR, \fB\-\-threads=\fR<n>
set number of (de)compression threads [2]
.TP
\fB\-p\fR, \fB\-\-preserve\-permissions\fR
don't subtract the umask on extraction
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages
.TP
\fB\-r\fR, \fB\-\-append\fR
append files to the end of an archive
.TP
\fB\-t\fR, \fB\-\-list\fR
list the contents of an archive
.TP
\fB\-v\fR, \fB\-\-verbose\fR
verbosely list files processed
.TP
\fB\-x\fR, \fB\-\-extract\fR
extract files/directories from an archive
.TP
\fB\-0\fR .. \fB\-9\fR
set compression level [default 6]
.TP
\fB\-\-uncompressed\fR
don't compress the archive created
.TP
\fB\-\-asolid\fR
create solidly compressed appendable archive
.TP
\fB\-\-bsolid\fR
create per block compressed archive (default)
.TP
\fB\-\-dsolid\fR
create per directory compressed archive
.TP
\fB\-\-no\-solid\fR
create per file compressed archive
.TP
\fB\-\-solid\fR
create solidly compressed archive
.TP
\fB\-\-anonymous\fR
equivalent to '\-\-owner=root \fB\-\-group\fR=\fI\,root\/\fR'
.TP
\fB\-\-owner=\fR<owner>
use <owner> name/ID for files added to archive
.TP
\fB\-\-group=\fR<group>
use <group> name/ID for files added to archive
.TP
\fB\-\-keep\-damaged\fR
don't delete partially extracted files
.TP
\fB\-\-missing\-crc\fR
exit with error status if missing extended CRC
.TP
\fB\-\-out\-slots=\fR<n>
number of 1 MiB output packets buffered [64]
.PP
Exit status: 0 for a normal exit, 1 for environmental problems (file not
found, files differ, invalid flags, I/O errors, etc), 2 to indicate a
corrupt or invalid input file, 3 for an internal consistency error (eg, bug)
which caused tarlz to panic.
.SH "REPORTING BUGS"
Report bugs to lzip\-bug@nongnu.org
.br
Tarlz home page: http://www.nongnu.org/lzip/tarlz.html
.SH COPYRIGHT
Copyright \(co 2020 Antonio Diaz Diaz.
Using lzlib 1.12\-rc1a
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
The full documentation for
.B tarlz
is maintained as a Texinfo manual. If the
.B info
and
.B tarlz
programs are properly installed at your site, the command
.IP
.B info tarlz
.PP
should give you access to the complete manual.
|
