NAME

       borg-import-tar - Create a backup archive from a tarball

SYNOPSIS

       borg [common options] import-tar [options] ARCHIVE TARFILE

DESCRIPTION

       This command creates a backup archive from a tarball.

       When giving '-' as path, Borg will read a tar stream from standard input.

       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:

       • .tar.gz or .tgz: gzip -d

       • .tar.bz2 or .tbz: bzip2 -d

       • .tar.xz or .txz: xz -d

       • .tar.zstd or .tar.zst: zstd -d

       • .tar.lz4: lz4 -d

       Alternatively, a --tar-filter program may be explicitly specified. It should read  compressed  data  from
       stdin and output an uncompressed tar stream on stdout.

       Most documentation of borg create applies. Note that this command does not support excluding files.

       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.

       A --sparse option (as found in borg create) is not supported.

       import-tar  reads  POSIX.1-1988  (ustar),  POSIX.1-2001  (pax),  GNU  tar, UNIX V7 tar and SunOS tar with
       extended attributes.

       To import multiple tarballs into a single archive, they can be simply  concatenated  (e.g.  using  "cat")
       into  a  single file, and imported with an --ignore-zeros option to skip through the stop markers between
       them.

OPTIONS

       See borg-common(1) for common options of Borg commands.

   arguments
       ARCHIVE
              name of archive to create (must be also a valid directory name)

       TARFILE
              input tar file. "-" to read from stdin instead.

   options
       --tar-filter
              filter program to pipe data through

       -s, --stats
              print statistics for the created archive

       --list output verbose list of items (files, dirs, ...)

       --filter STATUSCHARS
              only display items with the given status characters

       --json output stats as JSON (implies --stats)

       --ignore-zeros
              ignore zero-filled blocks in the input tarball

   Archive options
       --comment COMMENT
              add a comment text to the archive

       --timestamp TIMESTAMP
              manually specify the archive creation date/time (UTC, yyyy-mm-ddThh:mm:ss format).  alternatively,
              give a reference file/directory.

       -c SECONDS, --checkpoint-interval SECONDS
              write checkpoint every SECONDS seconds (Default: 1800)

       --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

       -C COMPRESSION, --compression COMPRESSION
              select compression algorithm, see the output of the "borg help compression" command for details.

SEE ALSO

       borg-common(1)

AUTHOR

       The Borg Collective

                                                   2025-04-18                                 BORG-IMPORT-TAR(1)