如何从文本文件中的特定行号设置变量? [英] How to set a variable from a specific line number in a text file?

问题描述

好的，这就是这种情况.我想要一个批处理文件，该文件将生成一个随机数，这将是它应该读取的行号，然后从文本文件中读取该行号.然后将该行号的内容设置为一个变量.有任何想法吗?谢谢！

Ok so here is the situation. I want a batch file that will generate a random number which will be the line number it should read, read that line number from a text file. Then set the contents of that line number to a variable. Any ideas? Thanks!

推荐答案

类似的方法应该起作用

@echo off
setlocal DisableDelayedExpansion
set MaxLine=10
set /a lineNr=%random% %% MaxLine
if %lineNr% EQU 0 (
    set "strSkip=" 
) ELSE (
    set "strSkip=skip=%lineNr%"
)
set /a lineNr+=1
for /F "usebackq %strSkip% delims=" %%a in ("text.txt") do (
  set "line=%%a"
  goto :break
)
:break
setlocal EnableDelayedExpansion
echo Line[%lineNr%]=!line!

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