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.TH "BORG-IMPORT-TAR" 1 "2024-01-01" "" "borg backup tool"
.SH NAME
borg-import-tar \- Create a backup archive from a tarball
.SH SYNOPSIS
.sp
borg [common options] import\-tar [options] ARCHIVE TARFILE
.SH DESCRIPTION
.sp
This command creates a backup archive from a tarball.
.sp
When giving \(aq\-\(aq as path, Borg will read a tar stream from standard input.
.sp
By default (\-\-tar\-filter=auto) Borg will detect whether the file is compressed
based on its file extension and pipe the file through an appropriate filter:
.INDENT 0.0
.IP \(bu 2
\&.tar.gz or .tgz: gzip \-d
.IP \(bu 2
\&.tar.bz2 or .tbz: bzip2 \-d
.IP \(bu 2
\&.tar.xz or .txz: xz \-d
.IP \(bu 2
\&.tar.zstd or .tar.zst: zstd \-d
.IP \(bu 2
\&.tar.lz4: lz4 \-d
.UNINDENT
.sp
Alternatively, a \-\-tar\-filter program may be explicitly specified. It should
read compressed data from stdin and output an uncompressed tar stream on
stdout.
.sp
Most documentation of borg create applies. Note that this command does not
support excluding files.
.sp
import\-tar is a lossy conversion:
BSD flags, ACLs, extended attributes (xattrs), atime and ctime are not exported.
Timestamp resolution is limited to whole seconds, not the nanosecond resolution
otherwise supported by Borg.
.sp
A \fB\-\-sparse\fP option (as found in borg create) is not supported.
.sp
import\-tar reads POSIX.1\-1988 (ustar), POSIX.1\-2001 (pax), GNU tar, UNIX V7 tar
and SunOS tar with extended attributes.
.sp
To import multiple tarballs into a single archive, they can be simply
concatenated (e.g. using \(dqcat\(dq) into a single file, and imported with an
\fB\-\-ignore\-zeros\fP option to skip through the stop markers between them.
.SH OPTIONS
.sp
See \fIborg\-common(1)\fP for common options of Borg commands.
.SS arguments
.INDENT 0.0
.TP
.B ARCHIVE
name of archive to create (must be also a valid directory name)
.TP
.B TARFILE
input tar file. \(dq\-\(dq to read from stdin instead.
.UNINDENT
.SS optional arguments
.INDENT 0.0
.TP
.B \-\-tar\-filter
filter program to pipe data through
.TP
.B \-s\fP,\fB \-\-stats
print statistics for the created archive
.TP
.B \-\-list
output verbose list of items (files, dirs, ...)
.TP
.BI \-\-filter \ STATUSCHARS
only display items with the given status characters
.TP
.B \-\-json
output stats as JSON (implies \-\-stats)
.TP
.B \-\-ignore\-zeros
ignore zero\-filled blocks in the input tarball
.UNINDENT
.SS Archive options
.INDENT 0.0
.TP
.BI \-\-comment \ COMMENT
add a comment text to the archive
.TP
.BI \-\-timestamp \ TIMESTAMP
manually specify the archive creation date/time (UTC, yyyy\-mm\-ddThh:mm:ss format). alternatively, give a reference file/directory.
.TP
.BI \-c \ SECONDS\fR,\fB \ \-\-checkpoint\-interval \ SECONDS
write checkpoint every SECONDS seconds (Default: 1800)
.TP
.BI \-\-chunker\-params \ PARAMS
specify the chunker parameters (ALGO, CHUNK_MIN_EXP, CHUNK_MAX_EXP, HASH_MASK_BITS, HASH_WINDOW_SIZE). default: buzhash,19,23,21,4095
.TP
.BI \-C \ COMPRESSION\fR,\fB \ \-\-compression \ COMPRESSION
select compression algorithm, see the output of the \(dqborg help compression\(dq command for details.
.UNINDENT
.SH SEE ALSO
.sp
\fIborg\-common(1)\fP
.SH AUTHOR
The Borg Collective
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