China DOS Union

For the existing text a.txt, the line numbers should not start from 1, but should start flowing from a specified value (for example 20), and a "+" symbol should be added at the end of each line number. The link below doesn't meet this requirement,
http://www.cn-dos.net/forum/viewthread.php?tid=30749&fpage=1&highlight=txt

I referred to and modified some expert's P below, but found that every line in A.txt gets numbered 20~100. Please advise.

for /f %%a in (a.txt) do (
for /L %%b in (20,1,100) do (
echo %%b +%%a >> b.txt
)
)

Solved, many thanks to the friend in reply #2

[ Last edited by userwww on 2007-10-10 at 10:36 PM ]

Solved it, thanks huzixuan

Because that %%b for loop is nested inside %%a, every line of %%a has to execute the %%b loop

Nowadays many MP3 players can display lyrics. For them to display properly, the lyric file (*.lrc) must have the same name as the song file (*.mp3)

Directory A contains *.Lrc lyric files (with multiple subdirectories), and directory B contains *.MP3 files (also with multiple subdirectories). Since I want to later download some songs and lyrics into my portable player, the lyric filenames and MP3 filenames must correspond. I want to 1. find the Lrc files under directory A that do not correspond to anything in directory B and delete them, 2. find the MP3 files under directory B that have no lyrics

This batch file only handles the current directory. How can it also handle subdirectories?

@echo off
del G:\list.txt>nul 2>nul
echo ---G:Music\01 >G:\list.txt
cd /d G:\music\01
for %%i in (*.mp3 *.wma) do (if not exist %%~ni.lrc echo %%~ni>>G:\list.txt)
echo ---G:Music\02 >>G:\list.txt
cd /d G:\Music\02
for %%i in (*.mp3 *.wma) do (if not exist %%~ni.lrc echo %%~ni>>G:\list.txt)
notepad G:\list.txt
exit

Original linkhttp://www.cn-dos.net/forum/viewthread.php?tid=23518&fpage=1&highlight=%E6%AD%8C%E8%AF%8D

[ Last edited by userwww on 2007-10-10 at 06:18 PM ]

Do the lyric files in directory A and the MPE files in directory B match up one by one?
For example, would A\1\歌曲.lrc correspond to B\2\歌曲.mp3?
How should "not corresponding" be understood?

The file locations do not necessarily correspond.
For example A\1\Chinese Man.Lrc B\2\Chinese Man.Mp3

But the lyric name "Chinese Man" and the song name "Chinese Man" must correspond. If the song name has spaces, then the lyric name must also have matching spaces

"1. find the Lrc files in directory A that do not correspond to anything in directory B and delete them"
What does that mean? How do you determine that they do not correspond?

Same discussion as this thread, but that thread is about matching in a directory without subdirectories, http://www.cn-dos.net/forum/viewthread.php?tid=23518&fpage=1&highlight=%E6%AD%8C%E8%AF%8D

@echo off for /f "delims=" %%i in ('dir /b /s b\*.mp3') do ( dir /b /s "a\%%~ni".lrc >nul 2>nul||>>没有歌词的mp3文件.txt echo %%i )
2. find the MP3 files in directory B that have no lyrics in A
I don't know how to define "do not correspond" for the first one

For the OP's first question... can FOR /L be used to mark line numbers?

Originally posted by bbq5201 at 2007-10-11 12:51 AM:
For the OP's first question... can FOR /L be used to mark line numbers?

With For /L, the line numbers start from 1; it seems they can't start from a specified value

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