Select Code to Download

perl -e "print qq/Hello world!\n/;"

perl -n -e "print qq/$.:\t$_\n/;" textfile.txt

while ( <> ) {
    ..........  # Your code goes here.
    print $_;
}

perl -pe "s/\bperl\b/Perl/g;" textfile.txt

perl -pe "s/\bperl\b/Perl/g;" textfile.txt >temptext.txt

perl -pi.bak -e "s/\bperl\b/Perl/g" infile.txt