ColorConsole [Version 1.3.3000]
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\WINDOWS>HELP GRAFTABL
Enable Windows to display an extended character set in graphics mode.

GRAFTABL [xxx]
GRAFTABL /STATUS

  xxx      Specifies a code page number.
  /STATUS  Displays the current code page selected for use with GRAFTABL.



C:\WINDOWS>HELP HELP
Provides help information for Windows XP commands.

HELP [command]

   command - displays help information on that command.



C:\WINDOWS>HELP IF
Performs conditional processing in batch programs.

IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command

 NOT               Specifies that Windows XP should carry out
                   the command only if the condition is false.

 ERRORLEVEL number Specifies a true condition if the last program run
                   returned an exit code equal to or greater than the number
                   specified.

 string1==string2  Specifies a true condition if the specified text strings
                   match.

 EXIST filename    Specifies a true condition if the specified filename
                   exists.

 command           Specifies the command to carry out if the condition is
                   met.  Command can be followed by ELSE command which
                   will execute the command after the ELSE keyword if the
                   specified condition is FALSE

The ELSE clause must occur on the same line as the command after the IF.  For
example:

   IF EXIST filename. (
       del filename.
   ) ELSE (
       echo filename. missing.
   )

The following would NOT work because the del command needs to be terminated
by a newline:

   IF EXIST filename. del filename. ELSE echo filename. missing

Nor would the following work, since the ELSE command must be on the same line
as the end of the IF command:

   IF EXIST filename. del filename.
   ELSE echo filename. missing

The following would work if you want it all on one line:

   IF EXIST filename. (del filename.) ELSE echo filename. missing

If Command Extensions are enabled IF changes as follows:

   IF [/I] string1 compare-op string2 command
   IF CMDEXTVERSION number command
   IF DEFINED variable command

where compare-op may be one of:

   EQU - equal
   NEQ - not equal
   LSS - less than
   LEQ - less than or equal
   GTR - greater than
   GEQ - greater than or equal

and the /I switch, if specified, says to do case insensitive string
compares.  The /I switch can also be used on the string1==string2 form
of IF.  These comparisons are generic, in that if both string1 and
string2 are both comprised of all numeric digits, then the strings are
converted to numbers and a numeric comparison is performed.

The CMDEXTVERSION conditional works just like ERRORLEVEL, except it is
comparing against an internal version number associated with the Command
Extensions.  The first version is 1.  It will be incremented by one when
significant enhancements are added to the Command Extensions.
CMDEXTVERSION conditional is never true when Command Extensions are
disabled.

The DEFINED conditional works just like EXISTS except it takes an
environment variable name and returns true if the environment variable
is defined.

%ERRORLEVEL% will expand into a string representation of
the current value of ERRORLEVEL, provided that there is not already
an environment variable with the name ERRORLEVEL, in which case you
will get its value instead.  After running a program, the following
illustrates ERRORLEVEL use:

   goto answer%ERRORLEVEL%
   :answer0
   echo Program had return code 0
   :answer1
   echo Program had return code 1

You can also using the numerical comparisons above:

   IF %ERRORLEVEL% LEQ 1 goto okay

%CMDCMDLINE% will expand into the original command line passed to
CMD.EXE prior to any processing by CMD.EXE, provided that there is not
already an environment variable with the name CMDCMDLINE, in which case
you will get its value instead.

%CMDEXTVERSION% will expand into a string representation of the
current value of CMDEXTVERSION, provided that there is not already
an environment variable with the name CMDEXTVERSION, in which case you
will get its value instead.




GOTO : HELP LABEL


 


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