执行批处理文件时如何在日志文件中追加数据

Question

I wanted to append the contents of the log file when i ran batch file often, code im using in batch file to create a log file which contains data present in the console is call test1.bat >logfile.log 2>&1 This only create the log file once and will not delete or append the data in the log file.. Please help me out to solve this issue. this is the content of the file

@echo off
CD /D %~dp0
set day=-1
echo >"%temp%\%~n0.vbs" s=DateAdd("d",%day%,now) : d=weekday(s)
echo>>"%temp%\%~n0.vbs" WScript.Echo year(s)^& right(100+month(s),2)^& right(100+day(s),2)
for /f %%a in ('cscript /nologo "%temp%\%~n0.vbs"') do set "result=%%a"
del "%temp%\%~n0.vbs"
set "YYYY=%result:~0,4%"
set "MM=%result:~4,2%"
set "DD=%result:~6,2%"
set "data=%yyyy%-%mm%-%dd%"
echo Yesterday was "%data%"

set year=%data:~0,4%
set month=%date:~4,2%
set day=%data:~8,3%

set filename=Login_%year%-%month%-%day%.log.gz

echo Filename =  %filename%


C:\wamp\bin\php\php5.3.9\php.exe  C:\wamp\www\F\csv\index.php 
call test1.bat >>logfile.log 2>&1


pause

Answer 1

call test1.bat >>logfile.log 2>&1

像每一个壳>>是appending.Check也是这个 。