1.if 判断
(1.1)判断字符串是否为空:
if "%var1%" == " " ( echo null)
else(echo not null )
(1.2)判断字符串是否不等于test
if not "%var1%" == "test" ( echo not equal)
else(echo equal )
(1.3)判断文件是否存在
if exist test1.txt (echo exist file)
(1.4)判断数值是否相等
if 1 equ 2 (echo equal) else (echo 1 not equal 2)
2.findstr 找到包含指定字符的文件
例子: dir /B |findstr "test"