a20150604

@echo off & setlocal enabledelayedexpansion

echo;errorlevel=!errorlevel!

nothiscommand

echo;errorlevel=!errorlevel!

dir ZZZ:\NOTHISDIR

echo;errorlevel=!errorlevel!

pause
exit
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a20150604

回复 5# houp
看看这个

@echo off

REM 如果已安装过此打印机, 就先删除
(wmic printer where "Name='\\\\192.168.113.1\\8楼打印机'" get Name | FIND /i "\\192.168.113.1\8楼打印机") && (
    echo;delete "\\192.168.113.1\8楼打印机"
    wmic printer where "Name='\\\\192.168.113.1\\8楼打印机'" delete
) || (
    echo;NOT FOUND THE PRINTER
)


REM TODO 安装打印机
REM ...

REM 如果已安装过此打印机, 就先删除
REM 如果存在指定名称的打印机, 下行语句将把 ERRORLEVEL 设置为 0, 否则 将 设为 1
wmic printer where "Name='\\\\192.168.113.1\\8楼打印机'" get Name | FIND /i "\\192.168.113.1\8楼打印机"
echo;errorlevel=%errorlevel%

wmic printer where "Name='NO_THIS_NAME_Printer'" get Name | FIND /i "NO_THIS_NAME_Printer"
echo;errorlevel=%errorlevel%

pause
exit
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