Set command output as variable

问题

I have Batch code like this

@echo off
:begin
SET d=netstat -an | find /c "0.0.0.0:80"
rem echo %d%
if %%d == "2" (
    echo true

    pause

    rem exit

) else ( 
    echo false

    pause

    rem GOTO begin
)

I want make netstat stetment output stored in variable d, and d became parameter from If cluse, What wrong with my file ?

回答1:

You don't need to set a variable in your case.

This should work :

netstat -an | find /c "0.0.0.0:80" && echo true || echo False

But if you need to have this value in a variable you can do like this :

@echo off
for /f %%a in ('netstat -an ^| find /c "0.0.0.0:80"') do set D=%%a
if %D% equ 2 (
echo true
) else (
echo false)

来源：https://stackoverflow.com/questions/23028318/set-command-output-as-variable