chomp VARIABLE
chomp LIST
chomp

chomp removes any line ending that corresponds to the current value of $/.
$/ is the special Perl variable holding the input record separator.
$/ is defaulting to a newline. 
chomp function returns the total number of characters removed.
chomp is usually used to remove the newline from the end of an input record. 
If VARIABLE is omitted, it chomps $_. 

while (<>) {
    chomp;
    print;
}