ZCAT(1) General Commands Manual ZCAT(1)

NAME

zcat — expand and concatenate data

SYNOPSIS

zcat [file ...]

DESCRIPTION

The zcat utility shall write to standard output the uncompressed form of files that have been compressed using the compress(1) utility. It is the equivalent of uncompress(1) -c. Input files are not affected.

OPTIONS

None.

OPERANDS

The following operand shall be 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 shall be used only if no file operands are specified, or if a file operand is ‘-’ .

INPUT FILES

Input files shall be compressed files that are in the format produced by the compress(1) utility.

ENVIRONMENT VARIABLES

The following environment variables shall affect the execution of zcat:

LANG: Provide a default value for the internationalization variables that are unset or null. (See XBD Internationalization Variables for the precedence of internationalization variables used to determine the values of locale categories.)
LC_ALL: If set to a non-empty string value, override the values of all the other internationalization variables.
LC_CTYPE: Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte 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 catalogs for the processing of LC_MESSAGES .