DOS bat file to add to path

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08-27-2013

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Quote:

Originally Posted by LMHmedchem

I may be able to use "setlocal", but when the bat file finishes, it will close and I'm guessing that the temp assignment to the path will go with it. This means that I would need to have the bat file stay open until I close it intentionally when I am done.

As it is: no. Unix shells work like that, but DOS doesn't. In fact, when you set a variable in a DOS batch file its value stays until you start the COMMAND.COM (or whatever replacement you use) anew. This is the reason why you can set the PATH variable in AUTOEXEC.BAT and have that change be persistent.

I hope this helps.

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file::spec::win32

File::Spec::Win32(3pm)					User Contributed Perl Documentation				    File::Spec::Win32(3pm)

NAME

       File::Spec::Win32 - methods for Win32 file specs

SYNOPSIS

	require File::Spec::Win32; # Done internally by File::Spec if needed

DESCRIPTION

       See File::Spec::Unix for a documentation of the methods provided there. This package overrides the implementation of these methods, not the
       semantics.

       devnull
	   Returns a string representation of the null device.

       tmpdir
	   Returns a string representation of the first existing directory from the following list:

	       $ENV{TMPDIR}
	       $ENV{TEMP}
	       $ENV{TMP}
	       SYS:/temp
	       C:system	emp
	       C:/temp
	       /tmp
	       /

	   The SYS:/temp is preferred in Novell NetWare and the C:system	emp for Symbian (the File::Spec::Win32 is used also for those
	   platforms).

	   Since Perl 5.8.0, if running under taint mode, and if the environment variables are tainted, they are not used.

       case_tolerant
	   MSWin32 case-tolerance depends on GetVolumeInformation() $ouFsFlags == FS_CASE_SENSITIVE, indicating the case significance when
	   comparing file specifications.  Since XP FS_CASE_SENSITIVE is effectively disabled for the NT subsubsystem.	See
	   http://cygwin.com/ml/cygwin/2007-07/msg00891.html Default: 1

       file_name_is_absolute
	   As of right now, this returns 2 if the path is absolute with a volume, 1 if it's absolute with no volume, 0 otherwise.

       catfile
	   Concatenate one or more directory names and a filename to form a complete path ending with a filename

       canonpath
	   No physical check on the filesystem, but a logical cleanup of a path. On UNIX eliminated successive slashes and successive "/.".  On
	   Win32 makes

		   dir1dir2dir3....dir4 -> dirdir4 and even
		   dir1dir2dir3...dir4   -> dirdir4

       splitpath
	       ($volume,$directories,$file) = File::Spec->splitpath( $path );
	       ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );

	   Splits a path into volume, directory, and filename portions. Assumes that the last file is a path unless the path ends in '\', '\.',
	   '\..'  or $no_file is true.  On Win32 this means that $no_file true makes this return ( $volume, $path, '' ).

	   Separators accepted are  and /.

	   Volumes can be drive letters or UNC sharenames (\servershare).

	   The results can be passed to "catpath" to get back a path equivalent to (usually identical to) the original path.

       splitdir
	   The opposite of catdir().

	       @dirs = File::Spec->splitdir( $directories );

	   $directories must be only the directory portion of the path on systems that have the concept of a volume or that have path syntax that
	   differentiates files from directories.

	   Unlike just splitting the directories on the separator, leading empty and trailing directory entries can be returned, because these are
	   significant on some OSs. So,

	       File::Spec->splitdir( "/a/b/c" );

	   Yields:

	       ( '', 'a', 'b', '', 'c', '' )

       catpath
	   Takes volume, directory and file portions and returns an entire path. Under Unix, $volume is ignored, and this is just like catfile().
	   On other OSs, the $volume become significant.

   Note For File::Spec::Win32 Maintainers
       Novell NetWare inherits its File::Spec behaviour from File::Spec::Win32.

COPYRIGHT

       Copyright (c) 2004,2007 by the Perl 5 Porters.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       See File::Spec and File::Spec::Unix.  This package overrides the implementation of these methods, not the semantics.

perl v5.14.2							    2010-09-20						    File::Spec::Win32(3pm)

Windows & DOS: Issues & Discussions