如何算没有台词的文本文件，并使用批处理脚本值存储到一个变量？ [英] How to count no of lines in text file and store the value into a variable using batch script?

问题描述

我要算没有台词的文本文件，然后将值必须存储到一个环境变量。该命令计算行没有为

I want to count the no of lines in a text file and then the value has to be stored into a environment variable. The command to count the no of lines is

findstr /R /N "^" file.txt | find /C ":"

我所指向的问题如何存储使用蝙蝠脚本变量的命令前pression的结果？
然后我尝试，

I refered the question How to store the result of a command expression in a variable using bat scripts? Then I tried,

set cmd="findstr /R /N "^" file.txt | find /C ":" "

我收到错误信息，

I am getting the error message,

FIND: Parameter format not correct

我怎么能摆脱这种错误。

How could i get rid of this error.

推荐答案

您可以用FOR / F回路，分配输出到一个变量。

You could use the FOR /F loop, to assign the output to a variable.

我用 CMD-变量，所以它不是neccessary逃避在cmd串管道或其他字符，如延迟扩展将字符串不变到for循环。

I use the cmd-variable, so it's not neccessary to escape the pipe or other characters in the cmd-string, as the delayed expansion passes the string "unchanged" to the FOR-Loop.

@echo off
cls
setlocal EnableDelayedExpansion
set "cmd=findstr /R /N "^^" file.txt | find /C ":""

for /f %%a in ('!cmd!') do set number=%%a
echo %number%

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