#!/bin/sh
curl https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts |\
perl -wnl -e '
  if ( /^0\.0\.0\.0 (.*)$/ ) {
    print "local-zone: \"" . $1 . "\" redirect\nlocal-data: \"" . $1 . " A 0.0.0.0\"";
  }
' > ads.conf


##</code><code>##

#!/bin/sh
curl https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts |\
perl -wnl -e '
  if ( /^0\.0\.0\.0/ ) {
    chomp; s/^0\.0\.0\.0 //;
    print "local-zone: \"" . $_ . "\" redirect\nlocal-data: \"" . $_ . " A 0.0.0.0\"";
  }
' > ads.conf


##</code><code>##

#!/bin/sh
curl https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts |\
perl -wnal -e '
  if ( $F[0] eq "0.0.0.0" ) {
    print "local-zone: \"" . $F[1] . "\" redirect\nlocal-data: \"" . $F[1] . " A 0.0.0.0\"";
  }
' > ads.conf


##</code><code>##

$ perl --help

Usage: perl [switches] [--] [programfile] [arguments]
  ...
  -a                autosplit mode with -n or -p (splits $_ into @F)
  -e program        one line of program (several -e's allowed, omit programfile)
  -l[octal]         enable line ending processing, specifies line terminator
  -n                assume "while (<>) { ... }" loop around program
  -w                enable many useful warnings
  ...