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setlocal ENABLEEXTENSIONS / ENABLEDELAYEDEX

Submitted by Extreme on Fri, 01/19/2007 - 01:00.Shell Scripting

Another title might be: "dereferencing with CMD"

setlocal ENABLEEXTENSIONS / ENABLEDELAYEDEXPANSION prevents an environment variable that's set in a called script from returning to the caller.

Ie/
Script1.cmd

@echo off
set RET=%1
set %RET%="My return value"

Executed from the command prompt:

Script1.cmd MyVariable
set MyVariable

returns

"My return value"

Adding:

setlocal ENABLEEXTENSIONS
setlocal ENABLEDELAYEDEXPANSION

causes this behavior to fail.

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Diff all combinations of a file in a given

Submitted by Extreme on Wed, 11/15/2006 - 23:32.Shell Scripting

@echo on
setlocal ENABLEEXTENSIONS
setlocal ENABLEDELAYEDEXPANSION
set /A ocount=0
set ARGS=%*
if NOT DEFINED ARGS goto HELP
for /F %%i in ('locate %ARGS%') do (
    set /A icount=0
    for /F %%j in ('locate %ARGS%') do (
        if /I "%%i" NEQ "%%j" if !icount! GEQ !ocount! if EXIST %%i if EXIST %%j bc2 %%i %%j
        set /A icount=!icount!+1
    )
    set /A ocount=!ocount!+1
)
goto end
:HELP
echo compare [options from locate] file
echo Ex/ compare -p . -lw sal.h
echo.
:end

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Delete duplicate files

Submitted by Extreme on Wed, 11/15/2006 - 23:31.Shell Scripting


@echo off

REM Enabling shell extensions.
setlocal ENABLEEXTENSIONS
setlocal ENABLEDELAYEDEXPANSION

set arg1=
set arg2=
set CWD=

:shiftargs
if ""%1""== """" goto NextQuestion
if NOT DEFINED arg1 set arg1=%~s1
shift
if NOT DEFINED arg2 set arg2=%~s1
goto shiftargs

:NextQuestion
REM Check to make sure the two directories exist in the filesystem.
if NOT DEFINED arg1 goto CantExecuteQuestion2
if NOT DEFINED arg2 goto CantExecuteQuestion2
if NOT EXIST %arg1% goto CantExecuteQuestion2
if NOT EXIST %arg2% goto CantExecuteQuestion2

REM Gets the current working directory

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