diff options
Diffstat (limited to 'usr/src/man/man1/compress.1')
| -rw-r--r-- | usr/src/man/man1/compress.1 | 40 |
1 files changed, 8 insertions, 32 deletions
diff --git a/usr/src/man/man1/compress.1 b/usr/src/man/man1/compress.1 index 40693a0408..e7a9f63519 100644 --- a/usr/src/man/man1/compress.1 +++ b/usr/src/man/man1/compress.1 @@ -44,12 +44,11 @@ .\" Portions Copyright (c) 1992, X/Open Company Limited All Rights Reserved .\" Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved .\" -.TH COMPRESS 1 "Mar 13, 2008" +.TH COMPRESS 1 "Feb 5, 2020" .SH NAME compress, uncompress, zcat \- compress, uncompress files or display expanded files .SH SYNOPSIS -.LP .nf \fBcompress\fR [\fB-fv/\fR] [\fB-b\fR \fIbits\fR] [\fIfile\fR]... .fi @@ -71,14 +70,12 @@ files .SH DESCRIPTION .SS "compress" -.sp -.LP The \fBcompress\fR utility attempts to reduce the size of the named files by using adaptive Lempel-Ziv coding. Except when the output is to the standard output, each file is replaced by one with the extension \fB\&.Z\fR, while keeping the same ownership modes, change times and modification times, ACLs, -and extended attributes. The compress utility also attempt to set the owner and -group of \fIfile\fR\fB\&.z\fR to the owner and group of file, but does not fail +and extended attributes. The compress utility also attempts to set the owner and +group of \fIfile\fR\fB\&.Z\fR to the owner and group of file, but does not fail if this cannot be done. If appending the \fB\&.Z\fR to the file pathname would make the pathname exceed \fB1023\fR bytes, the command fails. If no files are specified, the standard input is compressed to the standard output. @@ -93,8 +90,6 @@ specified during compression is encoded within the compressed file, along with a magic number to ensure that neither decompression of random data nor recompression of compressed data is subsequently allowed. .SS "uncompress" -.sp -.LP The \fBuncompress\fR utility restores files to their original state after they have been compressed using the \fBcompress\fR utility. If no files are specified, the standard input is uncompressed to the standard output. @@ -104,14 +99,10 @@ This utility supports the uncompressing of any files produced by \fBcompress\fR. For files produced by \fBcompress\fR on other systems, \fBuncompress\fR supports 9- to 16-bit compression (see \fB-b\fR). .SS "zcat" -.sp -.LP The \fBzcat\fR utility writes to standard output the uncompressed form of files that have been compressed using \fBcompress\fR. It is the equivalent of -\fBuncompress\fR\fB-c\fR. Input files are not affected. +\fBuncompress\fR \fB-c\fR. Input files are not affected. .SH OPTIONS -.sp -.LP The following options are supported: .sp .ne 2 @@ -181,8 +172,6 @@ diagnostic is written to \fBstderr\fR, and the final exit status is .RE .SH OPERANDS -.sp -.LP The following operand is supported: .sp .ne 2 @@ -197,14 +186,10 @@ standard input is used. .RE .SH USAGE -.sp -.LP See \fBlargefile\fR(5) for the description of the behavior of \fBcompress\fR, \fBuncompress\fR, and \fBzcat\fR when encountering files greater than or equal -to 2 Gbyte ( 2^31 bytes). +to 2 Gbyte (2^31 bytes). .SH ENVIRONMENT VARIABLES -.sp -.LP See \fBenviron\fR(5) for descriptions of the following environment variables that affect the execution of \fBcompress\fR, \fBuncompress\fR, and \fBzcat\fR: \fBLANG\fR, \fBLC_ALL\fR, \fBLC_COLLATE\fR, \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, @@ -220,8 +205,6 @@ in \fBLC_CTYPE\fR determines the locale for interpretation of sequences of bytes of text data a characters, the behavior of character classes used in the expression defined for the \fByesexpr\fR. See \fBlocale\fR(5). .SH EXIT STATUS -.sp -.LP The following error values are returned: .sp .ne 2 @@ -261,8 +244,6 @@ An error occurred. .RE .SH ATTRIBUTES -.sp -.LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp @@ -281,20 +262,17 @@ Standard See \fBstandards\fR(5). .TE .SH SEE ALSO -.sp -.LP \fBln\fR(1), \fBpack\fR(1), \fBfgetattr\fR(3C), \fBfsetattr\fR(3C), \fBattributes\fR(5), \fBenviron\fR(5), \fBlargefile\fR(5), \fBlocale\fR(5), \fBstandards\fR(5) .SH DIAGNOSTICS -.sp .ne 2 .na -\fBUsage: \fBcompress [-fv/] [-b\fR \fIbits\fR] [\fIfile\fR\|.\|.\|. ]\fR +\fBUsage: \fBcompress [-fv/] [-b\fR \fImaxbits\fR\fB]\fR [\fIfile\fR\|.\|.\|. ]\fR .ad .br .na -\fB\fBcompress c [-fv] [-b\fR \fIbits\fR] [\fIfile\fR\|.\|.\|. ]\fR +\fB\fBcompress c [-fv] [-b\fR \fImaxbits\fR\fB]\fR [\fIfile\fR]\fR .ad .sp .6 .RS 4n @@ -356,7 +334,7 @@ The file is assumed to be already compressed. Rename the file and try again. .sp .ne 2 .na -\fB\fIfile\fR: already exists; do you wish to overwrite (y or n)?\fR +\fB\fIfile\fR already exists; do you wish to overwrite (yes or no)?\fR .ad .sp .6 .RS 4n @@ -437,8 +415,6 @@ Extended system attributes could not be copied. .RE .SH NOTES -.sp -.LP Although compressed files are compatible between machines with large memory, \fB-b\fR 12 should be used for file transfer to architectures with a small process data space (64KB or less). |
