sed "s/\[.*\]//" a.txt >b.txt
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sed "s/\[.*\]\|\[\|\]//" a.txt >c.txt
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@echo off
setlocal enableDelayedExpansion
for /f %%i in (123.txt) do (
	set /a a+=1
	set a!a!=!a!:%%i
)
set a=
for /f %%j in ('findstr /n "[[][0-9]" 123.txt') do (
	set str=%%j&set str=!str:[= !&set str=!str:]= !
	for /f "tokens=1,3,4 delims= " %%k in ("!str!") do (
		set str1=%%k%%l%%m
		set count=%%k%%l%%m&set count=!count::= !
		for /f "delims= " %%l in ("!count!") do (
			set count1=%%l
			set a!count1!=!str1!
		)
	)
)

for /f %%z in (123.txt) do (
	set /a a+=1
	call set str1=%%a!a!%%&set str1=!str1::= !
	for /f "tokens=2 delims= " %%q in ("!str1!") do (
		echo %%q
	)
)>>$

move /y $ 123.txt
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@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (test.txt) do (
    set "str=%%i"
    set "s1=!str:*]=!"
    set "s2=!str:*[=!"
    if "!s1!" neq "!s2!" if "!s1!" neq "" if "!s2!" neq "" (
        for /f "tokens=1,3 delims=[]" %%a in ("!str!") do set "str=%%a%%b"
    )
     echo !str!
)
pause
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option explicit
dim fso, class1, class2, exp, a
set fso = createobject("scripting.filesystemobject")
set class1 = fso.opentextfile("123.txt")
write(func1(class1.readall))
class1.close

function func1(str)
	set exp = new regexp	
	exp.pattern = "[[][0-9]*[]]"
	exp.global = true
	func1 = exp.replace(str, "")
end function

function write(str)
	set class2 = fso.opentextfile("123.txt", 2)
	class2.write str
	class2.close
end function
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@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (test.txt) do (
    set str=%%i
    for /f "tokens=1-3 delims=[]" %%a in ("%%i") do (
        if "%%c" neq "" set str=%%a%%c
    )
        echo !str!
)
pause
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