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Batch Script - Right String

Batch Script - String length

Last Updated : 04 Jan, 2022

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In this article , we are going to learn how to find length of any String using Batch Script.

Batch Script :

@echo off  set str=Geeks For Geeks  call :strLen str strlen  echo String is %strlen% characters long  pause  exit /b    :strLen  setlocal enabledelayedexpansion    :strLen_Loop     if not "!%1:~%len%!"=="" set /A len+=1 & goto :strLen_Loop  (endlocal & set %2=%len%)  goto :eof

In Batch Scripting there no function for checking length of string ,So we will create a function to find length of string.

Explanation :

By using ' set ' we are getting our input string whose length is to calculated.
In above code we are creating a Function "strLen" , which we can use to find our string length.
From ':strLen' our function is started , then we will initialize our Loop with 'strLen_Loop'.
("!%1:~%len%!") this statement is checking that our string is ended or not by using (=="").

if not "!%1:~%len%!"=="" set /A len+=1 & goto :strLen_Loop

During execution of our 'if' statement its checking if ("!%1:~%len%!"=="") this argument is True then it will Break the Loop and if its False , it will be continued.
Now if our argument is False then we will set our 'len' variable as 'len=len+1' (also written as len+=1).
By using 'goto :strLen_Loop' we are continuing our Loop.
Now , again it will check whether our string is ended or not by using command ("!%1:~%len%!"=="") and increase 'len' by 1 if argument is False.
Now let's assume when our argument is True , loop will break and our string length is set in 'strlen'.
When 'strlen' is called it will print our string length.

Output:

Batch Script - Right String

thenavneet

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Article Tags :

Linux-Unix
Batch-script

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