Question

在windows中，我想循环遍历一组环境变量，例如这个伪代码：

set MYVAR1=test
set MYVAR2=4711
set MYVAR3="a b c"

for /l %%x in (1, 1, 3) do (
   echo %MYVAR%s%%
)

我期望以下输出

test
4711
a b c

如何更改此示例代码以使其正常工作？

Answer 1

@echo off
set MYVAR1=test
set MYVAR2=4711
set MYVAR3="a b c"

setlocal enableDelayedExpansion
for /l %%x in (1, 1, 3) do (
   echo !MYVAR%%x!
)
endlocal

Answer 2

还有一种方法，使用变量前缀

解析set命令的输出

@echo off
    setlocal enableextensions disabledelayedexpansion

    set MYVAR1=test
    set MYVAR2=4711
    set MYVAR3="a b c"

    for /f "tokens=1,* delims==" %%a in ('set MYVAR') do echo %%b

Answer 3

另一种方法：

@echo off
set MYVAR1=test
set MYVAR2=4711
set MYVAR3="a b c"

for /l %%x in (1, 1, 3) do (
   call echo %%MYVAR%%x%%
)
pause

如何在Windows批处理文件中循环环境变量？

3 个答案: