org.unix4j.unix.tail

Class TailOptionSets

java.lang.Object

org.unix4j.unix.tail.TailOptionSets

public final class TailOptionSets
extends Object

Options for the tail command with the the following options:

	-c		--chars		The count argument is in units of characters instead of lines. Starts from 1 and includes line ending characters.
	-q		--suppressHeaders		Suppresses printing of headers when multiple files are being examined.
	-s		--countFromStart		The count argument is relative to the beginning of the file instead of counting from the end of the file. For instance, tail -s 10 prints the lines starting from line 10; tail -s 1 prints the whole file.

This class serves as entry point to every possible set of tail options defined as an enum constant. With this explicit expansion of all possible option combinations, options can be passed to the command in a very compact form, such as:

 tail(Tail.Options.c, ...);
 tail(Tail.Options.c.q, ...);
 ...
 tail(Tail.Options.c.q.s, ...);
 

Field Summary

Fields

Modifier and Type	Field and Description
TailOptionSet_cqs	c Option "-c": The count argument is in units of characters instead of lines.
TailOptionSet_cqs	chars Option "--chars": The count argument is in units of characters instead of lines.
TailOptionSet_cqs	countFromStart Option "--countFromStart": The count argument is relative to the beginning of the file instead of counting from the end of the file.
static TailOptionSets	INSTANCE The singleton instance.
TailOptionSet_cqs	q Option "-q": Suppresses printing of headers when multiple files are being examined.
TailOptionSet_cqs	s Option "-s": The count argument is relative to the beginning of the file instead of counting from the end of the file.
TailOptionSet_cqs	suppressHeaders Option "--suppressHeaders": Suppresses printing of headers when multiple files are being examined.

Constructor Summary

Constructors

Constructor and Description
TailOptionSets()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final TailOptionSets INSTANCE

The singleton instance.

c

public final TailOptionSet_cqs c

Option "-c": The count argument is in units of characters instead of lines. Starts from 1 and includes line ending characters.

The option "-c" is equivalent to the "--chars" option.

chars

public final TailOptionSet_cqs chars

Option "--chars": The count argument is in units of characters instead of lines. Starts from 1 and includes line ending characters.

The option "--chars" is equivalent to the "-c" option.

s

public final TailOptionSet_cqs s

Option "-s": The count argument is relative to the beginning of the file instead of counting from the end of the file. For instance, tail -s 10 prints the lines starting from line 10; tail -s 1 prints the whole file.

The option "-s" is equivalent to the "--countFromStart" option.

countFromStart

public final TailOptionSet_cqs countFromStart

Option "--countFromStart": The count argument is relative to the beginning of the file instead of counting from the end of the file. For instance, tail -s 10 prints the lines starting from line 10; tail -s 1 prints the whole file.

The option "--countFromStart" is equivalent to the "-s" option.

q

public final TailOptionSet_cqs q

Option "-q": Suppresses printing of headers when multiple files are being examined.

The option "-q" is equivalent to the "--suppressHeaders" option.

suppressHeaders

public final TailOptionSet_cqs suppressHeaders

Option "--suppressHeaders": Suppresses printing of headers when multiple files are being examined.

The option "--suppressHeaders" is equivalent to the "-q" option.

Constructor Detail

TailOptionSets

public TailOptionSets()