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Alphabetical listing for T

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true(1)
NAME
  true, false - Returns a standard exit value

SYNOPSIS
  true

  false

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  true:	 XCU5.0

  false:  XCU5.0

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

DESCRIPTION
  The true command returns a 0 (zero) exit value. The false command returns a
  nonzero exit value. These commands are usually used in input to shell
  commands.

NOTES
  The special built-in utility : (colon) is sometimes more efficient than the
  true command.

EXIT STATUS
  [Tru64 UNIX]	The nonzero value returned by the false command may vary from
  system to system.

EXAMPLES
  To construct a loop in a shell procedure, enter:

       while true
       do
	       date
	       sleep 60
       done

  This procedure displays the date and time once a minute.  To stop it, press
  the Interrupt key sequence.

SEE ALSO
  Commands:  csh(1), ksh(1), Bourne Shell sh(1b), POSIX shell sh(1p)

  Standards:  standards(5)

Index for Section 1

Alphabetical listing for T

Top of page