57 lines
1.3 KiB
Groff
57 lines
1.3 KiB
Groff
.TH COMPRESS 1
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.SH NAME
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compress, uncompress, zcat \- compress a file using modified Lempel-Ziv coding
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.SH SYNOPSIS
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\fBcompress\fR [\fB\-cdfv\fR]\fR [\fIfile\fR] ...\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH OPTIONS
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.TP 5
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.B \-c
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# Put output on \fIstdout\fR instead of on \fIfile.Z\fR
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.TP 5
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.B \-d
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# Decompress instead of compress
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.TP 5
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.B \-f
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# Force output even if there is no saving
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.TP 5
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.B \-v
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# Verbose mode
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.SH EXAMPLES
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.TP 20
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.B compress <infile >outfile
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# Compress 1 file
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.TP 20
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.B compress x y z
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# Compress 3 files to \fIx.Z\fR, \fIy.Z\fR, and \fIz.Z\fR
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.TP 20
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.B compress \-d file.Z
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# Decompress \fIfile.Z\fR to \fIfile\fR
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.SH DESCRIPTION
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.PP
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The listed files (or \fIstdin\fR, if none are given) are compressed
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using the Ziv-Lempel algorithm. If the output is smaller than the input,
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the output is put on \fIfile.Z\fR or \fIstdout\fR if no files are listed.
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If \fIcompress\fR is linked to \fIuncompress\fR, the latter is the same
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as giving the \fB\-d\fP flag.
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Similarly, a link to \fIzcat\fR decompresses to \fIstdout\fR.
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The
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\s-1MINIX 3\s-1
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version of \fIcompress\fR uses 13-bit compression.
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This means that when compressing files on other systems for transmission to
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\s-1MINIX 3\s-1,
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be sure that only 13-bit compression is used.
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On many systems, the default is 16-bit (too big).
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.SH "SEE ALSO"
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.BR tar (1).
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