bat脚本之比较运算符 EQU – 等于 NEQ – 不等于 LSS – 小于 LEQ – 小于或等于 GTR – 大于 GEQ – 大于或等于

@echo.服务启动……
@echo service start…
@echo off
set a=1

echo a=%a%,b=%b%

copy d:\a.txt d:\b.txt

#错误判断
if %errorlevel% equ 0 (
echo “1”
) else (
echo on
echo. “0”
)

#rocketmq  java版本判断：

if %JAVA_MAJOR_VERSION% lss 17 (
   set "JAVA_OPT=%JAVA_OPT% -server -Xms2g -Xmx2g"
   set "JAVA_OPT=%JAVA_OPT% -XX:+UseG1GC -XX:G1HeapRegionSize=16m -XX:G1ReservePercent=25 -XX:InitiatingHeapOccupancyPercent=30 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:SurvivorRatio=8"
   set "JAVA_OPT=%JAVA_OPT% -verbose:gc -Xloggc:%USERPROFILE%\mq_gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCApplicationStoppedTime -XX:+PrintAdaptiveSizePolicy"
   set "JAVA_OPT=%JAVA_OPT% -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=30m"
   set "JAVA_OPT=%JAVA_OPT% -XX:-OmitStackTraceInFastThrow"
   set "JAVA_OPT=%JAVA_OPT% -XX:+AlwaysPreTouch"
   set "JAVA_OPT=%JAVA_OPT% -XX:MaxDirectMemorySize=15g"
   set "JAVA_OPT=%JAVA_OPT% -XX:-UseLargePages -XX:-UseBiasedLocking"
   set "JAVA_OPT=%JAVA_OPT% %JAVA_OPT_EXT% -cp %CLASSPATH%"
) else (
   set "JAVA_OPT=%JAVA_OPT% -server -Xms128m -Xmx512m"
   set "JAVA_OPT=%JAVA_OPT% -XX:+UseG1GC -XX:G1HeapRegionSize=16m -XX:G1ReservePercent=25 -XX:InitiatingHeapOccupancyPercent=30 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:SurvivorRatio=8"
   rem set "JAVA_OPT=%JAVA_OPT% -verbose:gc -Xloggc:%USERPROFILE%\mq_gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCApplicationStoppedTime -XX:+PrintAdaptiveSizePolicy"
   rem set "JAVA_OPT=%JAVA_OPT% -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=30m"
   set "JAVA_OPT=%JAVA_OPT% -XX:-OmitStackTraceInFastThrow"
   set "JAVA_OPT=%JAVA_OPT% -XX:+AlwaysPreTouch"
   set "JAVA_OPT=%JAVA_OPT% -XX:MaxDirectMemorySize=10g"
   set "JAVA_OPT=%JAVA_OPT% -XX:-UseLargePages -XX:-UseBiasedLocking"
   set "JAVA_OPT=%JAVA_OPT% %JAVA_OPT_EXT% -cp "%CLASSPATH%""
)

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