Storing return value of a command in batch file

问题

I am creating a batch file, in which I want to store the value returned by the following command (in Windows):

netstat -an | find ":port" /c

How to store the count value and print using echo?

回答1:

To capture the output of a command, you can use the for /F command; to store it into a variable, use set in the body of the for loop:

for /F "delims=" %L in ('netstat -an ^| find ":port" /c') do (set "VAR=%L")

Note the escaped pipe ^|. To use this within a batch file, replace %L by %%L.

This only works for a single-line output. If a command returns a multi-line output, only the last line is stored in variable VAR.

回答2:

I would guess something similar to:

@echo off
set "Blah=netstat -an|find ":port" /c"
echo %Blah%
pause

来源：https://stackoverflow.com/questions/33338817/storing-return-value-of-a-command-in-batch-file