@echo off
mode con cols=50 lines=10
color 0a
Title -[磁盘检测程序(自动电邮告警)]
set log_file_name=RunLog.txt
set lineno_max=365
set avail=1000
set svrname="测试服务器"
set ipaddr="192.168.180.000"
set freesize=0
set num=1048576
set disk1=c

if NOT exist %log_file_name% (echo 执行日志：>%log_file_name%)
for /f "delims=:" %%a in ('findstr/n .* "%log_file_name%"') do set lineno=%%a
echo %log_file_name%文件共有%lineno%行
if %lineno% GTR %lineno_max% (echo 执行日志：>%log_file_name% && echo %log_file_name%文件已经清空！)

for /f "tokens=3 delims= " %%a in ('dir /-c %disk1%:') do set "mc=%%a"
echo %mc%字节
set /a "freesize=%mc%/1000"
echo %disk1%盘剩余空间为%freesize%MB
echo 警戒值为%avail%MB
if %freesize% LSS %avail% (goto xiaoyu) else (goto exit)
:xiaoyu
echo %disk1%盘空间不足%avail%MB，将电邮告警！
echo 发电邮告警....（此功能由CmdMail实现，此处仅作演示说明。）
ping -n 4 127.1>nul
pause&&exit

:exit
echo 空间充裕，程序退出。&& echo %date% %time%：执行本程序，%disk1%盘磁盘空间%freesize%MB，未达到警戒值%avail%MB；>>%log_file_name%
ping -n 4 127.1>nul
exit
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C:\temp>set abc=1000000000000000000000

C:\temp>ClCalc.exe %abc%/1000/1000/1000/1000/1000/1000
1000000000000000000000/1000/1000/1000/1000/1000/1000 = 1000

C:\temp>ClCalc.exe %abc%/1024/1024/1024/1024/1024/1024
1000000000000000000000/1024/1024/1024/1024/1024/1024 = 867.361737988404
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@echo off
mode con cols=50 lines=10
color 0a
Title -[磁盘检测程序(自动电邮告警)]
set log_file_name=RunLog.txt
set lineno_max=365
set avail=100000
set svrname="测试服务器"
set ipaddr="132.147.180.000"
set freesize=0
set num=1048576
set disk1=c

if NOT exist %log_file_name% (echo 执行日志：>%log_file_name%)
for /f "delims=:" %%a in ('findstr/n .* "%log_file_name%"') do set lineno=%%a
echo %log_file_name%文件共有%lineno%行
if %lineno% GTR %lineno_max% (echo 执行日志：>%log_file_name% && echo %log_file_name%文件已经清空！)

for /f "tokens=3 delims= " %%a in ('dir /-c %disk1%:') do set "mc=%%a"
echo %mc%字节


set suru=%mc%/%num%
call :cu0  %suru:/= % freesize

echo %disk1%盘剩余空间为%freesize%MB
echo 警戒值为%avail%MB
if %freesize% LSS %avail% (goto xiaoyu) else (goto exit)
:xiaoyu
echo %disk1%盘空间不足%avail%MB，将电邮告警！
echo 发电邮告警....（此功能由CmdMail实现，此处仅作演示说明。）
ping -n 4 127.1>nul
pause&&exit

:exit
echo 空间充裕，程序退出。&& echo %date% %time%：执行本程序，%disk1%盘磁盘空间%freesize%MB，未达到警戒值%avail%MB；>>%log_file_name%
ping -n 4 127.1>nul
pause&&exit


:cu0 500位内整数除法函数（封装）by @随风 bbs.bathome.net
::函数内有 cu1 cu2 cu3 cu4 四个标签，引用时需注意
setlocal enabledelayedexpansion&set "lin=00000"
set /a zongw=1000,cs1w=0,cs2w=0,falg=0,x=0
if "!str!"=="1" Endlocal&set %~3=%ff%!num!&goto :EOF
if "%~1"=="0" set sang=0&goto cu4
if "!str!"=="0" set sang=以零为除数的错误。&goto cu4
if not defined xiaosu set /a xiaosu=10
for /l %%a in (1 1 5) do set "lin=!lin!!lin!!lin!"
set sang=&set ppp=&set var1=%~1&set "var2=%~2"
for /f "tokens=* delims=0" %%a in ("!var1!")do set var1=%%a
for /f "tokens=* delims=0" %%a in ("!var2!")do set var2=%%a
for /l %%a in (0 1 9)do (set "var1=!var1:%%a= %%a !"
set "var2=!var2:%%a= %%a !")
for %%a in (!var1!) do set /a cs1w+=1
for %%a in (!var2!) do set /a cs2w+=1
for /l %%a in (1 1 10) do (set t=&set cs=%~2&set/a j=0
for /l %%b in (1 1 !cs2w!) do (set /a a=%%a*!cs:~-1!+j
set t=!a:~-1!!t!&set a=0!a!&set "j=!a:~-2,1!"
set cs=!cs:~0,-1!&set cs%%a=&set "bj%%a=")
if !j! neq 0 (set cs%%a=!lin!!j!!t!&set "bj%%a=!j!!t!"
) else set cs%%a=!lin!!t!&set "bj%%a=!t!"
set "cs%%a=!cs%%a:~-%zongw%!")
set var2=!lin!!var2: =!&set "var2=!var2:~-%zongw%!"
set /a cswc=cs1w-cs2w&set "var1=!var1: =!"
if !cswc! lss 0 (set cswc=!cswc:-=!&set/a flag=1
for /l %%a in (1 1 !cswc!)do (
if %%a leq 11 set sang=0!sang!&set /a x=cswc-1
set "var1=!var1!0")
set "sang=!sang:~0,1!.!sang:~1!")
set ppp=!var1:~0,%cs2w%!&set "var1=!var1:~%cs2w%!"
if !flag! equ 1 (set /a bul=1) else set /a bul=0
goto cu2
:cu1
if not defined var1 (set "var1=0"
if not defined ppp goto cu4
if !flag! equ 0 (set sang=!sang!.&set /a flag=1))
set/a bul=1&set ppp=!ppp!!var1:~0,1!&set "var1=!var1:~1!"
:cu2
if !x! geq %xiaosu% goto cu4
set pvar1=!lin!!ppp!&set "pvar1=!pvar1:~-%zongw%!"
if "!pvar1!" lss "!var2!" (
if !bul! equ 1 (set sang=!sang!0&set /a bul=0
if !flag! equ 1 set /a x+=1)
if "!ppp:~0,1!"=="0" set "ppp="
goto cu1)
if !flag! equ 1 set /a x+=1
set /a bul=0
::计算商
for /l %%a in (1 1 10) do (
if "!cs%%a!" equ "!pvar1!" (
set "sang=!sang!%%a"&set "yu=!bj%%a!"&goto cu3)
if "!cs%%a!" gtr "!pvar1!" (set /a s=%%a-1
set "sang=!sang!!s!"&set yu=!t!&goto cu3)
set "t=!bj%%a!")
:cu3 计算差
set cjs=!ppp!&set cj1=&set m=&set/a jjj=0
for /l %%a in (0 1 9) do set "cjs=!cjs:%%a= %%a !"
for %%a in (!cjs!) do set "cj1=%%a !cj1!"
for %%a in (!cj1!) do (if "!yu!"=="" set/a yu=0
set /a a=%%a-jjj,b=!yu:~-1!
if !a! lss !b! (set /a a+=10,jjj=1)else set/a jjj=0
set /a w=a-b&set m=!w!!m!&set yu=!yu:~0,-1!)
for /f "tokens=* delims=0" %%m in ("!m!") do (
if "%%m"=="" (set m=0) else set "m=%%m")
if !m! equ 0 (
if "!var1:0=!"=="" set sang=!sang!!var1!&goto cu4
set ppp=&goto cu1) else set "ppp=!m!"
goto cu2
:cu4
if "!sang:~0,1!"=="." set "sang=0!sang!"
Endlocal&set %~3=%ff%%sang%&goto :EOF
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D:\bat_test>expr.exe 50 / 25
2
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@echo off
set "alarmValue=1073741824"
for /f "tokens=3" %%i in ('dir /a /-c C:') do set "freeSpace=%%i"
set "s1=00000000000000000000%freeSpace%"
set "s2=00000000000000000000%alarmValue%"
if "%s1:~-20%" LSS "%s2:~-20%" (
    echo;低于警戒值，发邮件
) else (
    echo;空间充足，剩余%freeSpace%字节，警戒值%alarmValue%字节
)
pause
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@echo off & setlocal enabledelayedexpansion
set "alarmValue=1024"
for /f "tokens=3" %%i in ('dir /a /-c C:') do set "freeSpace=%%i"
call :GetMB
if !rt! LSS !alarmValue! (
    echo;低于警戒值，发邮件
) else (
    echo;空间充足，剩余!rt!MB，警戒值!alarmValue!MB
)
pause & exit /b

:GetMB
set "str=!freeSpace!FEDCBA9876543210" & set /a Len=0x!str:~16,1!
for /L %%i in (0 1 !Len!) do (
        set "sang=!yu!!freeSpace:~%%i,1!"
        set /a yu=sang%%1048576,sang/=1048576
        if "!yu!" == "0" set "yu="
        set "rt=!rt!!sang!"
)
for /f "tokens=* delims=0" %%i in ("!rt!") do set /a rt=%%i+0
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