org.unix4j.unix

Class Cat

java.lang.Object

org.unix4j.unix.Cat

public final class Cat
extends Object

Non-instantiable module with inner types making up the cat command.

NAME

cat - concatenate and print files

SYNOPSIS

	cat
	cat <args>
	cat <files>
	cat <inputs>
	cat [-bns]
	cat [-bns] <files>
	cat [-bns] <paths>
	cat [-bns] <inputs>

See Cat.Interface for the corresponding command signature methods.

DESCRIPTION

The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-argument order. If no file argument is specified, cat reads from the standard input.

Options

The following options are supported:

	-b		--numberNonBlankLines		Number the non-blank output lines, starting at 1.
	-n		--numberLines		Number the output lines, starting at 1.
	-s		--squeezeEmptyLines		Squeeze multiple adjacent empty lines, causing the output to be single spaced.

OPERANDS

The following operands are supported:

	<files>	:	java.io.File...		The input files to be printed; relative paths are not resolved (use the string path argument to enable relative path resolving based on the current working directory).
	<paths>	:	String...		Path names of the input files to be printed; wildcards * and ? are supported; relative paths are resolved on the basis of the current working directory.
	<inputs>	:	org.unix4j.io.Input...		The inputs to be printed.
	<args>	:	String...		String arguments defining the options and file operands for the command. Options can be specified by acronym (with a leading dash "-") or by long name (with two leading dashes "--"). File arguments are expanded if wildcards are used.
	<options>	:	CatOptions		Options for the cat command.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Cat.Interface<R> Interface defining all method signatures for the "cat" command.

Field Summary

Fields

Modifier and Type	Field and Description
static CatFactory	Factory Singleton factory instance for the "cat" command.
static String	NAME The "cat" command name.
static CatOptionSets	Options Options for the "cat" command: b, n, s.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAME

public static final String NAME

The "cat" command name.

See Also:

Constant Field Values

Options

public static final CatOptionSets Options

Options for the "cat" command: b, n, s.

	-b		--numberNonBlankLines		Number the non-blank output lines, starting at 1.
	-n		--numberLines		Number the output lines, starting at 1.
	-s		--squeezeEmptyLines		Squeeze multiple adjacent empty lines, causing the output to be single spaced.

Factory

public static final CatFactory Factory

Singleton factory instance for the "cat" command.