本文介绍了使用Windows批处理从文本文件中删除重复行的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想从文本文件中删除重复的行,但使用Windows批处理脚本仅保留第一次出现的情况.
I want to remove duplicated lines from a text file but keeping only 1st occurence using windows batch scripting.
我尝试了很多方法,但时间长且效率低.
I tried many ways but it's long and not efficient.
请您帮忙吗?
推荐答案
下面的批处理文件可以满足您的要求:
The Batch file below do what you want:
@echo off
setlocal EnableDelayedExpansion
set "prevLine="
for /F "delims=" %%a in (theFile.txt) do (
if "%%a" neq "!prevLine!" (
echo %%a
set "prevLine=%%a"
)
)
如果您需要更有效的方法,请尝试以 filter 开发的Batch-JScript混合脚本,即类似于Unix uniq
程序的脚本.用.bat扩展名保存,例如uniq.bat
:
If you need a more efficient method, try this Batch-JScript hybrid script that is developed as a filter, that is, similar to Unix uniq
program. Save it with .bat extension, like uniq.bat
:
@if (@CodeSection == @Batch) @then
@CScript //nologo //E:JScript "%~F0" & goto :EOF
@end
var line, prevLine = "";
while ( ! WScript.Stdin.AtEndOfStream ) {
line = WScript.Stdin.ReadLine();
if ( line != prevLine ) {
WScript.Stdout.WriteLine(line);
prevLine = line;
}
}
两个程序均从复制而来这篇文章.
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