mirror of https://git.tukaani.org/xz.git
95 lines
1.5 KiB
Groff
95 lines
1.5 KiB
Groff
.\" SPDX-License-Identifier: 0BSD
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.\"
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.\" Authors: Lasse Collin
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.\" Jia Tan
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.\"
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.\" (Note that this file is not based on gzip's zdiff.1.)
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.\"
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.TH XZDIFF 1 "2024-02-12" "Tukaani" "XZ Utils"
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.SH NAME
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xzcmp, xzdiff, lzcmp, lzdiff \- compare compressed files
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.
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.SH SYNOPSIS
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.B xzcmp
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.RI [ option... ]
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.I file1
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.RI [ file2 ]
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.br
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.B xzdiff
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\&...
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.br
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.B lzcmp
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\&...
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.br
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.B lzdiff
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\&...
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.
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.SH DESCRIPTION
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.B xzcmp
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and
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.B xzdiff
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compare uncompressed contents of two files.
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Uncompressed data and options are passed to
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.BR cmp (1)
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or
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.BR diff (1)
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unless
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.B \-\-help
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or
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.B \-\-version
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is specified.
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.PP
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If both
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.I file1
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and
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.I file2
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are specified, they can be uncompressed files or files in formats that
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.BR xz (1),
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.BR gzip (1),
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.BR bzip2 (1),
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.BR lzop (1),
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or
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.BR zstd (1)
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can decompress.
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The required decompression commands are determined from
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the filename suffixes of
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.I file1
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and
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.IR file2 .
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A file with an unknown suffix is assumed to be either uncompressed
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or in a format that
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.BR xz (1)
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can decompress.
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.PP
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If only one filename is provided,
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.I file1
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must have a suffix of a supported compression format and the name for
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.I file2
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is assumed to be
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.I file1
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with the compression format suffix removed.
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.PP
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The commands
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.B lzcmp
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and
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.B lzdiff
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are provided for backward compatibility with LZMA Utils.
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.
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.SH EXIT STATUS
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If a decompression error occurs, the exit status is
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.BR 2 .
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Otherwise the exit status of
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.BR cmp (1)
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or
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.BR diff (1)
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is used.
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.
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.SH "SEE ALSO"
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.BR cmp (1),
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.BR diff (1),
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.BR xz (1),
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.BR gzip (1),
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.BR bzip2 (1),
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.BR lzop (1),
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.BR zstd (1)
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