NAME

zcat - expand and concatenate data

SYNOPSIS

zcat [file...]

DESCRIPTION

The zcat utility will write to standard output the uncompressed form of files that have been compressed using the compress utility. It is the equivalent of uncompress -c. Input files are not affected.

OPTIONS

None.

OPERANDS

The following operand is supported:

file

The pathname of a file previously processed by the compress utility. If file already has the .Z suffix specified, it is used as submitted. Otherwise, the .Z suffix is appended to the filename prior to processing.

STDIN

The standard input will be used only if no file operands are specified, or if a file operand is "-".

INPUT FILES

Input files must be compressed files that are in the format produced by the compress utility.

ENVIRONMENT VARIABLES

The following environment variables affect the execution of zcat:

LANG

Provide a default value for the internationalisation variables that are unset or null. If LANG is unset or null, the corresponding value from the implementation-dependent default locale will be used. If any of the internationalisation variables contains an invalid setting, the utility will behave as if none of the variables had been defined.

LC_ALL

If set to a non-empty string value, override the values of all the other internationalisation variables.

LC_CTYPE

Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single- as opposed to multi-byte characters in arguments).

LC_MESSAGES

Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error.

NLSPATH

Determine the location of message catalogues for the processing of LC_MESSAGES .

ASYNCHRONOUS EVENTS

Default.

STDOUT

The compressed files given as input will be written on standard output in their uncompressed form.

STDERR

Used only for diagnostic messages.

OUTPUT FILES

None.

EXTENDED DESCRIPTION

None.

EXIT STATUS

The following exit values are returned:

0

Successful completion.

>0

An error occurred.

CONSEQUENCES OF ERRORS

Default.

APPLICATION USAGE

None.

EXAMPLES

None.

FUTURE DIRECTIONS

None.

SEE ALSO

compress, uncompress, zcat.