cmd /批处理文件未按顺序显示或记录其他程序的输出

Question

我在Windows文件中有这个脚本，它可以做我想做的事情。它还显示并记录其输出，但显然该脚本中使用的程序的输出没有显示，也没有按顺序登录。请参见下面的脚本和输出。

@ECHO OFF
:: script global variables 
SET log=nslookup-tests.log

::Logic
set LF=^



REM The two empty lines abive are required!!
set output=****%date% %time% -- NSLOOKUP from anywhere with DNS server from edpnet****
setlocal EnableDelayedExpansion

set output=!output!!LF!!LF!!LF!**youtube.com
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup youtube.com 212.71.0.33') do (
 set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup youtube.com 8.8.8.8') do (
 set output=!output!!LF!%%f
)

set output=!output!!LF!!LF!!LF!**bestofyoutube.com
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup bestofyoutube.com 212.71.0.33') do (
 set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup bestofyoutube.com 8.8.8.8') do (
 set output=!output!!LF!%%f
)

set output=!output!!LF!!LF!!LF!**vidzi.tv
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup vidzi.tv 212.71.0.33') do (
 set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup vidzi.tv 8.8.8.8') do (
 set output=!output!!LF!%%f
)

::output to screen and append to log file
echo !output!
echo !output!!LF!!LF!!LF!!LF! >> "!log!"

::Keep window open
cmd /k

输出：

****wo 23/12/2015    9:46:18,94 -- NSLOOKUP from anywhere with DNS server from edpnet****

Non-authoritative answer:
Non-authoritative answer:
Non-authoritative answer:
Non-authoritative answer:
Non-authoritative answer:
Non-authoritative answer:
****do 24/12/2015 14:49:32,90 -- NSLOOKUP from anywhere with DNS server from edpnet****


**youtube.com

*edpnet DNS
Server:  dns01.edpnet.net
Address:  212.71.0.33
Name:    youtube.com
Addresses:  2a00:1450:4013:c00::5d
    173.194.65.190
    173.194.65.136
    173.194.65.93
    173.194.65.91

*google DNS
Server:  google-public-dns-a.google.com
Address:  8.8.8.8
Name:    youtube.com
Addresses:  2a00:1450:400c:c07::5b
    85.234.204.215
    85.234.204.236
    85.234.204.251
    85.234.204.226
    85.234.204.237
    85.234.204.211
    85.234.204.245
    85.234.204.230
    85.234.204.241
    85.234.204.222
    85.234.204.221
    85.234.204.207
    85.234.204.249
    85.234.204.219
    85.234.204.234


**bestofyoutube.com

*edpnet DNS
Server:  dns01.edpnet.net
Address:  212.71.0.33
Name:    bestofyoutube.com
Address:  104.238.110.149

*google DNS
Server:  google-public-dns-a.google.com
Address:  8.8.8.8
Name:    bestofyoutube.com
Address:  104.238.110.149


**vidzi.tv

*edpnet DNS
Server:  dns01.edpnet.net
Address:  212.71.0.33
Name:    vidzi.tv
Addresses:  46.17.100.122
    46.28.202.183
    82.115.15.12

*google DNS
Server:  google-public-dns-a.google.com
Address:  8.8.8.8
Name:    vidzi.tv
Addresses:  82.115.15.12
    46.28.202.183
    46.17.100.122

输出的顺序有些有序，但是有一堆Non-authoritative answer:出现在顶部，而不是在日志文件中。它们似乎没有被附加到输出变量中。

程序是否在没有等待它完成的情况下执行一个又一个命令？这似乎是异步行为。

Answer 1

标准输出消息有stdout，错误消息有stderr。

Non-authoritative answer是一条写入stderr的错误消息。

命令用于进程，默认情况下只有写入stdout的消息。

这样做可能要容易得多，可以将使用命令重定向运算符和stdout和stderr直接重定向到日志文件，而不是收集环境变量中的所有消息行，最后将环境变量的值写入日志文件。

但是，将 of nslookup重定向到每个for循环中的stdout，使用带有转义角括号和符号的2>&1和^使2>&1应用于E 127nslookupE 228而不是命令E 129用于E 230，这将解决您的问题。

@echo off
:: script global variables
set log=nslookup-tests.log

::Logic
set LF=^



REM The two empty lines above are required!!

set output=****%date% %time% -- NSLOOKUP from anywhere with DNS server from edpnet****
setlocal EnableDelayedExpansion

set output=!output!!LF!!LF!!LF!**youtube.com
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup youtube.com 212.71.0.33 2^>^&1') do (
    set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup youtube.com 8.8.8.8 2^>^&1') do (
    set output=!output!!LF!%%f
)

set output=!output!!LF!!LF!!LF!**bestofyoutube.com
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup bestofyoutube.com 212.71.0.33 2^>^&1') do (
    set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup bestofyoutube.com 8.8.8.8 2^>^&1') do (
    set output=!output!!LF!%%f
)

set output=!output!!LF!!LF!!LF!**vidzi.tv
set output=!output!!LF!!LF!*edpnet DNS
for /F "delims=" %%f in ('nslookup vidzi.tv 212.71.0.33 2^>^&1') do (
    set output=!output!!LF!%%f
)
set output=!output!!LF!!LF!*google DNS
for /F "delims=" %%f in ('nslookup vidzi.tv 8.8.8.8 2^>^&1') do (
    set output=!output!!LF!%%f
)

::output to screen and append to log file
echo !output!
echo !output!!LF!!LF!!LF!!LF! >> "!log!"

::Keep window open
%SystemRoot%\System32\cmd.exe /k

下面是将、stderr、和stdout直接重定向到日志文件的代码。

@echo off
:: script global variables
set "log=nslookup-tests.log"

(
    echo ****%date% %time% -- NSLOOKUP from anywhere with DNS server from edpnet****
    echo.
    echo.
    echo **youtube.com
    echo.
    echo *edpnet DNS
    %SystemRoot%\System32\nslookup.exe youtube.com 212.71.0.33
    echo *google DNS
    %SystemRoot%\System32\nslookup.exe youtube.com 8.8.8.8

    echo.
    echo **bestofyoutube.com
    echo.
    echo *edpnet DNS
    %SystemRoot%\System32\nslookup.exe bestofyoutube.com 212.71.0.33
    echo *google DNS
    %SystemRoot%\System32\nslookup.exe bestofyoutube.com 8.8.8.8

    echo.
    echo **vidzi.tv
    echo.
    echo *edpnet DNS
    %SystemRoot%\System32\nslookup.exe vidzi.tv 212.71.0.33
    echo *google DNS
    %SystemRoot%\System32\nslookup.exe vidzi.tv 8.8.8.8
    echo.
) >"%TEMP%\%log%" 2>&1

rem Output to screen and append new log to previous log.
type "%TEMP%\%log%"
type "%TEMP%\%log%">>"%log%"
del "%TEMP%\%log%"

::Keep window open
%SystemRoot%\System32\cmd.exe /k