Не могу писать символы в bat-файлах

@echo on
echo a=^2>1.log
>>1.log echo a=2
(echo a=2) >>1.log
pause>nul

@echo on
setlocal enabledelayedexpansion
set "vzk=^!"
echo !vzk!
set vz=^^^!
echo !vz!
pause>nul

@echo off
for /f "delims=" %%a in ('type "file.txt"') do set "s=%%a"& call :p "%%s:!=^!%%"
pause& exit
 
:p
 setlocal enabledelayedexpansion
 echo %~1
exit/b

@echo off
<"file.txt" (
 for /f "delims=" %%a in ('more') do (
  set "s=%%a"
  setlocal enabledelayedexpansion
  set "s=!s:^!=^^!!"
  echo !s!
 )
)
pause

@echo off
for /f "delims=" %%a in ('echo set^=cmd') do set vk="%%a"& call :p1 %%vk%%
for /f "delims=" %%a in ('echo set^=cmd') do set vk=%%a& call :p1 "%%vk%%"
for /f "delims=" %%a in ('echo set=cmd') do set vk=%%a& call :p1 "%%vk:set =set=%%"
for %%a in (^< ^> ^| ^( ^) ^& ^@ ^^) do set sl=^^^%%a& call :p1 ^^%%sl%%
setlocal enabledelayedexpansion
for %%a in (^^^!) do set sl=^^^%%a& call :p2 ^^%%sl%%
pause
:p1
 echo %~1
exit/b
:p2
 echo ^%~1
exit/b