to-lzma(1) General Commands Manual to-lzma(1)
NAME
to-lzma - convert .Z, .lzo, .zip, .rar, .gz, .bz2, and .bz3 files to
lzma format (DEPRECATED)
SYNOPSIS
to-lzma [-h(elp)] [-(IPv)4] [-(IPv)6] [-d(elete_original)]
[-k(eep_smallest)] [-m(ax_compress)] [-n(o_overwrite)] [-p num_cores]
[-t(imestamp_retain)] file/URL...
DESCRIPTION
to-lzma recompresses files compressed with the compress, lzop, zip,
gzip, bzip2, bzip3, and/or zstd utilities into lzma format. The newly
compressed files will usually have a .lzma or a .tlz extension. If a
specified file is actually a URL, it will be downloaded using wget and
then recompressed.
OPTIONS
-h Print help and quit.
-4 Prefer IPv4 when downloading a URL.
-6 Prefer IPv6 when downloading a URL.
-d After each file is compressed, delete the original.
-k Once a file is successfully recompressed, delete the larger of
the original file or the new one. This option maximizes disk
space savings and is incompatible with the -d option.
-m Compress more, but at the expense of increased CPU time and
memory usage.
-n Do not overwrite the target .lzma or .tlz file if it already
exists.
-p num_cores
Use the multi-threaded -T option of lzma to utilize multiple
cores during compression. Note that the output file, while
being fully compatible with unthreaded lzma, will generally be
slightly larger. Specifying a num_cores value of zero will
utilize all available cores. This option has no effect if the
alternate lzma_alone compression engine is used.
-t Make the timestamp of new files match those of the old files.
NOTES
Note that the .lzma file format is a raw LZMA compressed data stream.
It has been deprecated in favor of the .lz and .xz files produced by
lzip and xz, respectively. These newer file formats feature
identifying magic bytes and CRC-based integrity checks, and using one
of them instead of .lzma is strongly recommended. The author prefers
lzip, as it compresses slightly better and has a simpler and arguably
superior file format.
SEE ALSO
lzma(1), lzma_alone(1), compress(1), zip(1), gzip(1), lzop(1),
bzip2(1), bzip3(1), zstd(1), rar2tarcat(1), zip2tarcat(1), lzip(1),
xz(1), wget(1)
COPYRIGHT
Copyright (C) 2006-2026 by Brian Lindholm. This program is free
software; you can use it, redistribute it, and/or modify it under the
terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
littleutils 2026 Jan 01 to-lzma(1)
littleutils 1.4.0 - Generated Wed Feb 18 07:46:16 CST 2026