Обработка данных, полученных из COM-порта

SetLocal EnableExtensions EnableDelayedExpansion
echo off
set "reg="
findstr # C:\reg.txt
set/p reg=<C:\reg.txt & echo. %reg%
rem set/p "reg =< findstr # C:\reg.txt"
rem set reg = %reg:~4%
for /f "tokens=1" %%i in ('findstr # C:\reg.txt') do ( echo i=%%i)
echo reg=%reg%
pause

SetLocal EnableExtensions EnableDelayedExpansion
echo off
for /f "tokens=1 delims=#" %%i in ('findstr # C:\reg.txt') do (set reg=%%i)
echo reg=%reg%
pause

SetLocal EnableExtensions EnableDelayedExpansion
echo off
for /f "tokens=1 delims=#" %%i in ('findstr # C:\reg.txt') do (
set "reg=%%i"
echo reg=!reg!
)
pause

SetLocal EnableDelayedExpansion
for /f "tokens=* delims=#" %%i in ('more +1 "c:\reg.txt"') do (set num=%%i)
set num=!num:~0,10%!
echo !num!
pause

SetLocal EnableDelayedExpansion
for /f "delims=" %%i in ('more +1 "c:\reg.txt"') do (echo %%i)
pause
for /f "tokens=* delims=#" %%i in ('more +1 "c:\reg.txt"') do (set num=%%i)
set num=!num:~0,10%!
echo !num!
pause

SetLocal EnableDelayedExpansion
set /a "nu=0"
for /f "tokens=* delims=#" %%i in ('more "c:\reg.txt"') do (
    set "num=%%i"
    set /a "nu=!nu!+1"
    )
set "num=!num:~0,10%!"
echo !num!  !nu!
pause

for /f "tokens=* delims=#" %i in ('find "#" "C:\reg.txt"') do (echo %i)
for /f "skip=1 tokens=* delims=#" %i in ('more "C:\reg.txt"') do (echo %i)
for /f "tokens=* delims=#" %i in ('more +1 "C:\reg.txt"') do (echo %i)