Using while loop to read content

    


open (FILEHANDLE, "<file.txt") 
    or die ("Cannot open file.txt");
while (<FILEHANDLE>){
    print;
}

1.	Using file handle variable
2.	Select a file handle
3.	Pass file handle reference in a the form of '*FILEHANDLE{IO}'
4.	Pass file handle reference to a subroutine
5.	Pass file handle to stat function
6.	Passing Filehandles by Reference
7.	Passing file handles to functions
8.	Filehandle References
9.	Split a file handle containing array
10.	undef file handle
11.	defined lines in a file
12.	Using a scalar variable to store a file variable name.
13.	Redirects the standard output and standard error files.
14.	To write to a file:
15.	Passing file name to functions

Using while loop to read content : file handle « File « Perl