CMD line to tell if a file/path is local or remote?

From an NT s开发者_运维知识库hell script, I need to be able to tell if the target path is on a local drive (like C:\ or D:\) or on a remote/mapped drive (either \\UNC\path or mapped drive letter like Z:)... Any suggestions?

---

@echo off
goto main

:isremote
setlocal
set _isremote=0
if "%~d1"=="\\" (set _isremote=1) else (
    (>nul 2>&1 net use "%~d1") && set _isremote=1
)
endlocal&set isremote=%_isremote%&goto :EOF

:test
call :isremote "%~1"
echo %isremote% == %~1
@goto :EOF

:main
call :test c:
call :test c:\
call :test c:\windows
call :test \\foo
call :test \\foo\
call :test \\foo\bar
call :test \\foo\bar\baz
call :test z:
call :test z:\
call :test z:\temp

On my system where z: is a mapped drive I get:

0 == c:
0 == c:\
0 == c:\windows
1 == \\foo
1 == \\foo\
1 == \\foo\bar
1 == \\foo\bar\baz
1 == z:
1 == z:\
1 == z:\temp

Note: Will probably fail on UNC symlinks on NT6+

---

Below is what I came up with. The target file/path is passed as parameter %1.

set REMOTE=0
set TEST=%~f1
if "%TEST:~0,2%"=="\\" (
    echo *** target is a remote UNC path
    set REMOTE=1
) else (
    for /f "skip=6 tokens=2" %%d in ('net use') do (
        if /i "%TEST:~0,2%"=="%%d" (
            echo *** target is a remote mapped drive
            set REMOTE=1
        )
    )
)
if %REMOTE%==0 echo *** target is a local file/directory

---

Your best bet is to use something like this:

fsutil fsinfo drivetype X:

However, the respective code may be language dependent due to the output from fsutil. If that's not an issue you will be best off tokenizing and using the output from fsutil.

---

Basic recognition script in Ruby, doesn't support mapped drivers.

where_placed.rb:

path = ARGV[0]
if path.start_with? "\\"
  puts "remote"
else
  puts "local"
end

> ruby where_placed.rb "C:\file.dat > "local"

> ruby where_placed.rb "\\REMOTEMACHINE\file.dat > "remote"