如何在Windows命令脚本中向文件中现有行的末尾添加数字

Question

尝试将数字添加到文件的行尾，如下所示：

Id
CN04FIL002,21,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 10:32,
CN04FIL002,365,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 10:35,
CN04FIL002,3285,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 10:44,
CN04FIL002,9318,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 10:59,
CN04FIL002,3,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 11:01,
CN04FIL002,2373,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 11:29,
CN04FIL002,2684,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 11:10,
CN04FIL002,26,,,cn04fil002.mhf.mhc,1,backupexec,03/30/2017 10:30,03/30/2017 10:30,03/30/2017 11:23,

诸若此类。我想要做的是写一个脚本，在每一行的最后一个逗号之后添加递增的数字，并保存当前的数字，这样每次运行脚本时，数字都可以继续递增。我该如何着手做这样的事情呢？

Answer 1

下面的代码实现了您想要的功能。

@echo off

setlocal EnableDelayedExpansion

for /f %%i in (count.txt) do (
    set "linesCount=%%i"
)

set "numLine=0"
for /f "tokens=*" %%i in (file.txt) do (
    set /a "numLine+=1"
    if "!linesCount!" equ "0" (
       echo(%%i!numLine!>>file.new.txt 
    ) else (
       set /a "linesCount-=1"
       echo(%%i>>file.new.txt
    )
)

move /Y file.new.txt file.txt >nul 2>&1
echo(!numLine!>count.txt

我将上次处理的行数保存在一个名为count.txt的文件中。如果它不存在，也就是说，脚本从未运行过，则创建内含零的count.txt。只需将file.txt重命名为您的文件名。

Answer 2

我认为这可能是最快的方法：

@echo off
set "_FILE=textfile.txt"

for /F %%C in ('^< "%_FILE%" find /C /V ""') do set "COUNT=%%C"
< "%_FILE%" (
    setlocal EnableDelayedExpansion
    for /L %%I in (1,1,%COUNT%) do (
        set /A "INDEX=%%I-1"
        set "LINE=" & set /P LINE=""
        if !INDEX! GTR 0 (
            echo(!LINE!!INDEX!
        ) else (
            echo(!LINE!
        )
    )
    endlocal
)

这将跳过被视为标题的第一行(Id)。

附加的第一个索引号是1。