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OpenSolaris 2009.06 - man page for exit (opensolaris section 1)

exit(1) 				  User Commands 				  exit(1)

NAME
       exit,  return,  goto  -	shell  built-in functions to enable the execution of the shell to
       advance beyond its sequence of steps

SYNOPSIS
   sh
       exit [n]

       return [n]

   csh
       exit [( expr )]

       goto label

   ksh
       *exit [n]

       *return [n]

   ksh93
       +exit [n]

       +return [n]

DESCRIPTION
   sh
       exit causes the calling shell or shell script to exit with the exit status specified by n.
       If  n  is omitted the exit status is that of the last command executed (an EOF also causes
       the shell to exit.)

       return causes a function to exit with the return value specified by n. If  n  is  omitted,
       the return status is that of the last command executed.

   csh
       exit causes the calling shell or shell script to exit, either with the value of the status
       variable or with the value specified by the expression expr.

       The goto built-in uses a specified label as a search string amongst  commands.  The  shell
       rewinds	its input as much as possible and searches for a line of the form label: possibly
       preceded by space or tab characters. Execution continues after the indicated line.  It  is
       an  error  to  jump to a label that occurs between a while or for built-in command and its
       corresponding end.

   ksh
       exit causes the calling shell or shell script to exit with the exit status specified by n.
       The  value  is  the least significant 8 bits of the specified status. If n is omitted then
       the exit status is that of the last command executed. When exit occurs  when  executing	a
       trap, the last command refers to the command that executed before the trap was invoked. An
       end-of-file also causes the shell to exit except for  a	shell  which  has  the	ignoreeof
       option (See set below) turned on.

       return  causes  a  shell  function or '.' script to return to the invoking script with the
       return status specified by n. The value is the least significant 8 bits of  the	specified
       status.	If  n  is omitted then the return status is that of the last command executed. If
       return is invoked while not in a function or a '.' script, then it is the same as an exit.

       On this man page, ksh(1) commands that are preceded  by	one  or  two  *  (asterisks)  are
       treated specially in the following ways:

	   1.	  Variable  assignment lists preceding the command remain in effect when the com-
		  mand completes.

	   2.	  I/O redirections are processed after variable assignments.

	   3.	  Errors cause a script that contains them to abort.

	   4.	  Words, following a command preceded by ** that are in the format of a  variable
		  assignment,  are  expanded  with  the same rules as a variable assignment. This
		  means that tilde substitution is performed after the = sign and word	splitting
		  and file name generation are not performed.

   ksh93
       exit is shell special built-in that causes the shell that invokes it to exit. Before exit-
       ing the shell, if the EXIT trap is set, it is invoked.

       If n is specified, it is used to set the exit status.

       return is a shell special built-in that causes the function or dot script that invokes  it
       to  exit.  If  return  is  invoked outside of a function or dot script it is equivalent to
       exit.

       If return is invoked inside a function defined with the	function  reserved  word  syntax,
       then  any EXIT trap set within the function is invoked in the context of the caller before
       the function returns.

       If n is specified, it is used to set the exit status.

       On this manual page, ksh93 commands that are preceded by one or two + symbols are  special
       built-in commands and are treated specially in the following ways:

	   1.	  Variable  assignment lists preceding the command remain in effect when the com-
		  mand completes.

	   2.	  I/O redirections are processed after variable assignments.

	   3.	  Errors cause a script that contains them to abort.

	   4.	  They are not valid function names.

	   5.	  Words following a command preceded by ++ that are in the format of  a  variable
		  assignment  are  expanded  with  the	same rules as a variable assignment. This
		  means that tilde substitution is performed after the = sign and field splitting
		  and file name generation are not performed.

EXIT STATUS
   ksh93
       If  n  is  specified  for exit, the exit status is the least significant eight bits of the
       value of n. Otherwise, the exit status is the  exit  status  of	preceding  command.  When
       invoked inside a trap, the preceding command means the command that invoked the trap.

       If  n  is specified for return, the exit status is the least significant eight bits of the
       value of n. Otherwise, the exit status is the exit status of preceding command.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       break(1), csh(1), ksh(1), ksh93(1), sh(1), attributes(5)

SunOS 5.11				    2 Nov 2007					  exit(1)


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