Saya menulis satu set skrip batch untuk ini. addpath.bat menambahkan elemen ke path, rmpath.bat menghapus elemen dari path, dan lpath.bat hanya mencantumkan path. Tapi kemudian saya membutuhkan beberapa skrip dukungan, jadi ada juga chkpath.bat.
Itu akhirnya tidak sepele dan diperlukan tr.exe dan cat.exe, beberapa utilitas unix-style. Alasannya tidak sepele: tidak ada backticks di cmd.exe (meskipun Anda dapat menggunakan untuk loop untuk ini), dan nama pendek versus nama panjang.
addpath.bat:
@echo off
setlocal
set cwd=%~dps0
goto testit
:loopy
call %cwd%chkpath "%~1"
if %errorlevel%==2 (
set path=%path%;%~1
)
shift
:testit
if not _%1==_ goto loopy
call %cwd%lpath.bat
endlocal & set path=%path%
ChkPath.bat:
@echo off
goto START
-------------------------------------------------------
chkpath.bat
checks path for existence of the given segment.
Returns 1 if present, 2 if not present, 0 if not checked.
The matching and checking complicated by case sensitivity and "short pathnames".
created sometime in 2003 and lovingly maintained since then.
-------------------------------------------------------
:START
setlocal enabledelayedExpansion
set rc=0
set cwd=%~dps0
set curdrive=%~d0
set tr=%curdrive%\bin\tr.exe
set regexe=%windir%\system32\reg.exe
if _%1==_ goto Usage
@REM convert arg 1 to a fully-qualified, short path name,
@REM and then convert to uppercase.
set toupper=%~fs1
call :ToUpper
set tocheck=%toupper%
if not _%TEMP%==_ goto GotTemp
call :gettemp
:GotTemp
set d=%DATE:~4%
set stamp=%d:~6%%d:~3,2%%d:~0,2%%TIME::=%
set d=
set tempfile1=%TEMP%\chkpath1-%stamp%.tmp
echo %path% | %tr% ; \n > %tempfile1%
@REM check each element in the path for the match:
for /f "delims=^" %%I in (%tempfile1%) do (
if !rc!==0 (
call :CheckElt "%%I"
)
)
if %rc%==0 set rc=2
goto END
--------------------------------------------
* checkelt
*
* check one element in the path to see if it is the same
* as the TOCHECK string. The element is first canonicalized.
*
:CheckElt
@REM remove surrounding quotes
set ERF=%1
if [x%ERF%]==[x] goto CheckEltDone
@REM convert to fully-qualified, short paths, uppercase
set TOUPPER=%~fs1%
call :ToUpper
if _%TOCHECK% == _%TOUPPER% set rc=1
:CheckEltDone
goto:EOF
--------------------------------------------
--------------------------------------------
* backtick
*
* invoke a command and return the result as a string.
* This is like backtick in csh or bash.
* To call, set variable BACKTICK to the command to be run.
* The result will be stored in the env variable of the same name.
*
:backtick
FOR /F "usebackq delims=" %%i IN (`%backtick%`) DO (
SET backtick=%%i
)
goto backtick_done
:backtick_none
SET backtick=nothing to exec
:backtick_done
goto:EOF
--------------------------------------------
--------------------------------------------
* gettemp
*
* get the temporary directory, as stored in the registry.
* Relies on backtick.
*
* The result set TEMP.
*
:gettemp
set regkey=HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
set regvalname=Local AppData
set backtick=%regexe% query "%regkey%" /v "%regvalname%"
call :backtick
for /f "tokens=4" %%a in ("%backtick%") do (
set temp=%%a
)
goto:EOF
--------------------------------------------
--------------------------------------------
* ToUpper
*
* Convert a string to all uppercase.
* To call, set variable TOUPPER to the thing to be converted.
* The result will be stored in the env variable of the same name.
*
:ToUpper
FOR /F "usebackq delims=" %%I IN (`echo %toupper% ^| %tr% a-z A-Z`) DO (
SET toupper=%%I
)
goto:EOF
--------------------------------------------
--------------------------------------------
:CleanUp
if _%tempfile1%==_ goto CleanUpDone
if exist %tempfile1% del %tempfile1%
:CleanUpDone
goto:EOF
--------------------------------------------
--------------------------------------------
:Usage
echo.
echo Usage: chkpath ^<path^>
echo checks if path element is included in path variable.
echo returns 1 if yes, 2 if no, 0 if not checked.
echo.
goto END
--------------------------------------------
:END
call :CleanUp
:ReallyEnd
endlocal & set errorlevel=%rc%
@REM set errorlevel=%rc%
@REM echo %errorlevel%
lpath.bat:
@echo.
@set curdrive=%~d0
@REM This form post-fixes a | at the end of each path element. Useful for debugging trailing spaces.
@REM @path | %curdrive%\cygwin\bin\sed.exe -e s/PATH=// -e 's/;/^|\n/g' -e 's/$/^|/g'
@REM This form shows bare path elements.
@REM @path | %curdrive%\cygwin\bin\sed.exe -e 's/PATH=//' -e 's/;/^\n/g'
@path | %curdrive%\utils\sed -e "s/PATH=//" | %curdrive%\utils\tr ; \n
@echo.