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Perl | tell() Function

  • Last Updated : 07 May, 2019

tell() function in Perl is used to get the position of the read pointer in a File with the use of its FileHandle. If no FileHandle is passed then it returns the position within the most recent accessed file.

Syntax: tell(FileHandle)

Parameter:
FileHandle: Filehandle of the file to be accessed.

Returns: the current position of the read pointer

Example 1:






#!/usr/bin/perl 
   
# Opening a File in Read-only mode 
open(fh, "<", "Hello.txt"); 
  
$position = tell(fh);
print("Position of read pointer before reading: $position");
   
# Reading first 10 characters from the file
for($i = 0; $i < 10; $i++)
{
    $ch = getc(fh);
}
  
$position = tell(fh);
  
# Current position of the read pointer
print("\nCurrent Position: $position");
   
# Closing the File 
close(fh); 

Output:

Example 2:




#!/usr/bin/perl 
   
# Opening a File in Read-only mode 
open(fh, "<", "Hello.txt"); 
  
$position = tell(fh);
print("Position of read pointer before reading: $position\n");
  
# Printing First 10 Characters
print("First ten characters are: ");
  
# Reading and printing first 
# 10 characters from the file
for($i = 0; $i < 10; $i++)
{
    $ch = getc(fh);
    print" $ch";
}
  
$position = tell(fh);
  
# Current position of the read pointer
print("\nCurrent Position: $position");
   
# Closing the File 
close(fh); 

Output:




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