重定向的没有得出想要的结果 - 中国DOS联盟论坛

下面这段代码得不到想要的结果，但是把>>号前面加上一个空格就可以了，不知道为什么？


echo {>>test.txt
echo if ($2==2) $2=4 >>test.txt
echo else if ($2==1) $2=2 >>test.txt
echo else if ($2==3) $2=5>>test.txt
echo else if ($2==4) $2=3 >>test.txt
echo else $2=1>>test.txt
echo if ($13==1) $13=5>>test.txt
echo else if ($13==2) $13=4>>test.txt
echo else if ($13==3) $13=3>>test.txt
echo else if ($13==4) $13=2>>test.txt
echo else $13=1>>test.txt
echo if ($16==1) $16=5>>test.txt
echo else if ($16==2) $16=4>>test.txt
echo else if ($16==3) $16=3>>test.txt
echo else if ($16==4) $16=2>>test.txt
echo else $16=1>>test.txt
echo if ($19==1) $19=5>>test.txt
echo else if ($19==2) $19=4>>test.txt
echo else if ($19==3) $19=3>>test.txt
echo else if ($19==4) $19=2>>test.txt
echo else $19=1>>test.txt
echo if ($22==1) $22=5>>test.txt
echo else if ($22==2) $22=4>>test.txt
echo else if ($22==3) $22=3>>test.txt
echo else if ($22==4) $22=2>>test.txt
echo else $22=1>>test.txt
echo }>>test.txt

方法1：

@echo off&setlocal ENABLEDELAYEDEXPANSION
(for /f "usebackq delims=" %%a in ("%~f0") do (
    set "a=%%a"
    if defined b echo %%a
    if "!a:~0,3!"==":标签" set b==
))>test.txt
exit
:标签
{
if ($2==2) $2=4
else if ($2==1) $2=2
else if ($2==3) $2=5
else if ($2==4) $2=3
else $2=1
if ($13==1) $13=5
else if ($13==2) $13=4
else if ($13==3) $13=3
else if ($13==4) $13=2
else $13=1
if ($16==1) $16=5
else if ($16==2) $16=4
else if ($16==3) $16=3
else if ($16==4) $16=2
else $16=1
if ($19==1) $19=5
else if ($19==2) $19=4
else if ($19==3) $19=3
else if ($19==4) $19=2
else $19=1
if ($22==1) $22=5
else if ($22==2) $22=4
else if ($22==3) $22=3
else if ($22==4) $22=2
else $22=1
}

方法2：

@echo off&setlocal ENABLEDELAYEDEXPANSION
(
echo {
echo if ($2==2) $2=4
echo else if ($2==1) $2=2
echo else if ($2==3) $2=5
echo else if ($2==4) $2=3
echo else $2=1
echo if ($13==1) $13=5
echo else if ($13==2) $13=4
echo else if ($13==3) $13=3
echo else if ($13==4) $13=2
echo else $13=1
echo if ($16==1) $16=5
echo else if ($16==2) $16=4
echo else if ($16==3) $16=3
echo else if ($16==4) $16=2
echo else $16=1
echo if ($19==1) $19=5
echo else if ($19==2) $19=4
echo else if ($19==3) $19=3
echo else if ($19==4) $19=2
echo else $19=1
echo if ($22==1) $22=5
echo else if ($22==2) $22=4
echo else if ($22==3) $22=3
echo else if ($22==4) $22=2
echo else $22=1
echo }
)>test.txt

方法3：

@echo off
(for /f "delims=" %%a in ('more +3^<"%~f0"') do echo %%a)>test.txt
exit
{
if ($2==2) $2=4
else if ($2==1) $2=2
else if ($2==3) $2=5
else if ($2==4) $2=3
else $2=1
if ($13==1) $13=5
else if ($13==2) $13=4
else if ($13==3) $13=3
else if ($13==4) $13=2
else $13=1
if ($16==1) $16=5
else if ($16==2) $16=4
else if ($16==3) $16=3
else if ($16==4) $16=2
else $16=1
if ($19==1) $19=5
else if ($19==2) $19=4
else if ($19==3) $19=3
else if ($19==4) $19=2
else $19=1
if ($22==1) $22=5
else if ($22==2) $22=4
else if ($22==3) $22=3
else if ($22==4) $22=2
else $22=1
}

第1楼　740011611	发表于 2010-12-24 00:15
初级用户　发帖 83　积分 96　来自信阳
重定向的没有得出想要的结果下面这段代码得不到想要的结果，但是把>>号前面加上一个空格就可以了，不知道为什么？ echo {>>test.txt echo if ($2==2) $2=4 >>test.txt echo else if ($2==1) $2=2 >>test.txt echo else if ($2==3) $2=5>>test.txt echo else if ($2==4) $2=3 >>test.txt echo else $2=1>>test.txt echo if ($13==1) $13=5>>test.txt echo else if ($13==2) $13=4>>test.txt echo else if ($13==3) $13=3>>test.txt echo else if ($13==4) $13=2>>test.txt echo else $13=1>>test.txt echo if ($16==1) $16=5>>test.txt echo else if ($16==2) $16=4>>test.txt echo else if ($16==3) $16=3>>test.txt echo else if ($16==4) $16=2>>test.txt echo else $16=1>>test.txt echo if ($19==1) $19=5>>test.txt echo else if ($19==2) $19=4>>test.txt echo else if ($19==3) $19=3>>test.txt echo else if ($19==4) $19=2>>test.txt echo else $19=1>>test.txt echo if ($22==1) $22=5>>test.txt echo else if ($22==2) $22=4>>test.txt echo else if ($22==3) $22=3>>test.txt echo else if ($22==4) $22=2>>test.txt echo else $22=1>>test.txt echo }>>test.txt

第2楼　Hanyeguxing	发表于 2010-12-24 01:38
银牌会员　发帖 897　积分 1,039　来自在地狱中仰望天堂
方法1：@echo off&setlocal ENABLEDELAYEDEXPANSION (for /f "usebackq delims=" %%a in ("%~f0") do ( set "a=%%a" if defined b echo %%a if "!a:~0,3!"==":标签" set b== ))>test.txt exit :标签 { if ($2==2) $2=4 else if ($2==1) $2=2 else if ($2==3) $2=5 else if ($2==4) $2=3 else $2=1 if ($13==1) $13=5 else if ($13==2) $13=4 else if ($13==3) $13=3 else if ($13==4) $13=2 else $13=1 if ($16==1) $16=5 else if ($16==2) $16=4 else if ($16==3) $16=3 else if ($16==4) $16=2 else $16=1 if ($19==1) $19=5 else if ($19==2) $19=4 else if ($19==3) $19=3 else if ($19==4) $19=2 else $19=1 if ($22==1) $22=5 else if ($22==2) $22=4 else if ($22==3) $22=3 else if ($22==4) $22=2 else $22=1 }

第3楼　Hanyeguxing	发表于 2010-12-24 01:41
银牌会员　发帖 897　积分 1,039　来自在地狱中仰望天堂
方法2：@echo off&setlocal ENABLEDELAYEDEXPANSION ( echo { echo if ($2==2) $2=4 echo else if ($2==1) $2=2 echo else if ($2==3) $2=5 echo else if ($2==4) $2=3 echo else $2=1 echo if ($13==1) $13=5 echo else if ($13==2) $13=4 echo else if ($13==3) $13=3 echo else if ($13==4) $13=2 echo else $13=1 echo if ($16==1) $16=5 echo else if ($16==2) $16=4 echo else if ($16==3) $16=3 echo else if ($16==4) $16=2 echo else $16=1 echo if ($19==1) $19=5 echo else if ($19==2) $19=4 echo else if ($19==3) $19=3 echo else if ($19==4) $19=2 echo else $19=1 echo if ($22==1) $22=5 echo else if ($22==2) $22=4 echo else if ($22==3) $22=3 echo else if ($22==4) $22=2 echo else $22=1 echo } )>test.txt

第4楼　Hanyeguxing	发表于 2010-12-24 01:43
银牌会员　发帖 897　积分 1,039　来自在地狱中仰望天堂
方法3：@echo off (for /f "delims=" %%a in ('more +3^<"%~f0"') do echo %%a)>test.txt exit { if ($2==2) $2=4 else if ($2==1) $2=2 else if ($2==3) $2=5 else if ($2==4) $2=3 else $2=1 if ($13==1) $13=5 else if ($13==2) $13=4 else if ($13==3) $13=3 else if ($13==4) $13=2 else $13=1 if ($16==1) $16=5 else if ($16==2) $16=4 else if ($16==3) $16=3 else if ($16==4) $16=2 else $16=1 if ($19==1) $19=5 else if ($19==2) $19=4 else if ($19==3) $19=3 else if ($19==4) $19=2 else $19=1 if ($22==1) $22=5 else if ($22==2) $22=4 else if ($22==3) $22=3 else if ($22==4) $22=2 else $22=1 }