dot(1p) - phpMan

DOT(P)                                                                  DOT(P)



NAME
       dot - execute commands in the current environment

SYNOPSIS
       . file

DESCRIPTION
       The shell shall execute commands from the file in the current environment.

       If  file does not contain a slash, the shell shall use the search path specified by
       PATH to find the directory containing file. Unlike normal command search,  however,
       the  file  searched  for  by the dot utility need not be executable. If no readable
       file is found, a non-interactive shell shall  abort;  an  interactive  shell  shall
       write  a diagnostic message to standard error, but this condition shall not be con-
       sidered a syntax error.

OPTIONS
       None.

OPERANDS
       See the DESCRIPTION.

STDIN
       Not used.

INPUT FILES
       See the DESCRIPTION.

ENVIRONMENT VARIABLES
       See the DESCRIPTION.

ASYNCHRONOUS EVENTS
       Default.

STDOUT
       Not used.

STDERR
       The standard error shall be used only for diagnostic messages.

OUTPUT FILES
       None.

EXTENDED DESCRIPTION
       None.

EXIT STATUS
       Returns the value of the last command executed, or a zero exit status if no command
       is executed.

CONSEQUENCES OF ERRORS
       Default.

       The following sections are informative.

APPLICATION USAGE
       None.

EXAMPLES
              cat foobar
              foo=hello bar=world. foobar
              echo $foo $bar
              hello world

RATIONALE
       Some older implementations searched the current directory for the file, even if the
       value of PATH disallowed it.   This  behavior  was  omitted  from  this  volume  of
       IEEE Std 1003.1-2001 due to concerns about introducing the susceptibility to trojan
       horses that the user might be trying to avoid by leaving dot out of PATH .

       The KornShell version of dot takes optional arguments that are  set  to  the  posi-
       tional  parameters.  This  is  a valid extension that allows a dot script to behave
       identically to a function.

FUTURE DIRECTIONS
       None.

SEE ALSO
       Special Built-In Utilities

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std
       1003.1,  2003  Edition,  Standard  for Information Technology -- Portable Operating
       System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C)
       2001-2003  by  the  Institute  of Electrical and Electronics Engineers, Inc and The
       Open Group. In the event of any discrepancy between this version and  the  original
       IEEE  and The Open Group Standard, the original IEEE and The Open Group Standard is
       the  referee  document.  The  original  Standard  can   be   obtained   online   at
       http://www.opengroup.org/unix/online.html .



POSIX                                2003                               DOT(P)

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