.BAT文件messure路径长度，并把它放在一个.txt文件 [英] .bat messure file path length and put it in a .txt-file

问题描述

我试图让将通过所有文件在指定文件夹中运行.bat文件，测量文件+路径的长度，如果它不是如更长的时间。 50个字符的文件和路径写入到一个.txt文件。

I'm trying to make a .bat file that will run through all files in a given folder, measure the length of the file+path and if its longer than eg. 50 characters the file and path are written into a .txt-file.

我是pretty太大的的n00b，所以不先进，而且有些很好的解释;）

I'm pretty much a n00b, so not to advanced, and somewhat well explained ;).

我写到一个文件中以

回声％文件％> filer.txt

echo %File% > filer.txt

在哪里文件应包含文件名和路径。

Where File should contain the file name and path.

编辑：
对不起，我或许我应该preform任务的描述有点不清楚。我是彪，环槽文件和特定文件夹的子文件夹。并在文档中返回与路径文件超过50，包括驱动器和文件类型。

Im sorry, I was perhaps a bit unclear in my description of the task it should preform. What I ment was, loop trough files and subfolders of a given folder. and return in the document the files with a path longer than 50 including Drive and Filetype.

推荐答案

正如丹尼斯已经指出的，批次具有用于获得该路径的lenght没有内置的溶液。但是，如果你只是想知道，如果一个字符串的长度超过 N ，只检查，如果在一个字符 N + 1 位置：

As Dennis already noted, batch has no built-in solution for getting the lenght of the path. But if you only want to know, if a string is larger than n, just check, if there is a character at the n+1 position:

if "%string:~51,1%" neq "" echo %string% is longer than 50 characters

比计算字符快多了。

Much faster than counting characters.

与丹尼斯的逻辑组合：

@echo off
setlocal EnableDelayedExpansion
(
  for %%g in ("*") do (
    set "File=%%~dpnxg"
    if "!File:~51,1!" neq "" echo !File!
  )
)>filer.txt

我把整个为循环到另一块只有一次到输出文件重定向。这是更快（＆GT;＆GT; 将打开文件，写一行，并关闭文件，只是再次打开它等...）

I put the whole for loop into another block to redirect only once to the output-file. this is much faster (>> would open the file, write one line and close the file, just to open it again etc...)

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