如何创建FULL_REMOTE_DIR与FULL_LOCAL_DIR的联合文件名列表

方法1：直接遍历并输出联合列表 #

将两个目录路径用空格分隔，放入同一个FOR循环中，即可一次性遍历两个目录的所有文件并输出：

@echo off
SETLOCAL enabledelayedexpansion
TITLE Demo Mode
ECHO small script to showcase
ECHO how to iterate folders
SET mypath=%cd%
SET "remote_dir=\remote\*"
SET "local_dir=\local\*"
SET "other_dir=\other\*"

SET "FULL_REMOTE_DIR=%mypath%%remote_dir%"
SET "FULL_LOCAL_DIR=%mypath%%local_dir%"
SET "FULL_OTHER_DIR=%mypath%%other_dir%"

ECHO 联合文件列表:
REM 遍历两个目录的文件，%%~nxa仅输出文件名+扩展名，需要完整路径则用%%a
FOR %%a IN ("%FULL_REMOTE_DIR%" "%FULL_LOCAL_DIR%") DO (
    ECHO %%~nxa
)

方法2：将文件名收集到变量中统一输出 #

如果需要把所有文件名存储到变量里供后续使用，可以通过延迟扩展拼接变量实现：

@echo off
SETLOCAL enabledelayedexpansion
TITLE Demo Mode
ECHO small script to showcase
ECHO how to iterate folders
SET mypath=%cd%
SET "remote_dir=\remote\*"
SET "local_dir=\local\*"
SET "other_dir=\other\*"

SET "FULL_REMOTE_DIR=%mypath%%remote_dir%"
SET "FULL_LOCAL_DIR=%mypath%%local_dir%"
SET "FULL_OTHER_DIR=%mypath%%other_dir%"

SET "COMBINED_LIST="

REM 收集远程目录文件名
FOR %%a IN ("%FULL_REMOTE_DIR%") DO (
    SET "COMBINED_LIST=!COMBINED_LIST! %%~nxa"
)

REM 收集本地目录文件名
FOR %%a IN ("%FULL_LOCAL_DIR%") DO (
    SET "COMBINED_LIST=!COMBINED_LIST! %%~nxa"
)

ECHO 联合文件列表:
ECHO !COMBINED_LIST:~1!  REM 移除开头多余的空格

方法3：去重后的联合列表（处理重复文件名） #

如果两个目录存在相同文件名，想要只保留一次，可通过记录已输出文件的方式实现去重：

@echo off
SETLOCAL enabledelayedexpansion
TITLE Demo Mode
ECHO small script to showcase
ECHO how to iterate folders
SET mypath=%cd%
SET "remote_dir=\remote\*"
SET "local_dir=\local\*"
SET "other_dir=\other\*"

SET "FULL_REMOTE_DIR=%mypath%%remote_dir%"
SET "FULL_LOCAL_DIR=%mypath%%local_dir%"
SET "FULL_OTHER_DIR=%mypath%%other_dir%"

ECHO 去重后的联合文件列表:
SET "SEEN_FILES="

REM 遍历远程目录并输出未重复的文件
FOR %%a IN ("%FULL_REMOTE_DIR%") DO (
    IF "!SEEN_FILES:%%~nxa=!"=="!SEEN_FILES!" (
        ECHO %%~nxa
        SET "SEEN_FILES=!SEEN_FILES! %%~nxa"
    )
)

REM 遍历本地目录并输出未重复的文件
FOR %%a IN ("%FULL_LOCAL_DIR%") DO (
    IF "!SEEN_FILES:%%~nxa=!"=="!SEEN_FILES!" (
        ECHO %%~nxa
        SET "SEEN_FILES=!SEEN_FILES! %%~nxa"
    )
)

内容的提问来源于stack exchange，提问作者3kstc