#!/usr/bin/env bash
src="${1}" destination="${2}"
# Remove comments and print only the domain name
# Most of the lists downloaded are already in hosts file format but the spacing/formatting is not contiguous
# This helps with that and makes it easier to read
# It also helps with debugging so each stage of the script can be researched more in depth
# 1) Remove carriage returns
# 2) Convert all characters to lowercase
# 3) Remove comments (text starting with "#", include possible spaces before the hash sign)
# 4) Remove lines containing "/"
# 5) Remove leading tabs, spaces, etc.
# 6) Remove empty lines
< "${src}" tr -d '\r' | \
tr '[:upper:]' '[:lower:]' | \
sed 's/\s*#.*//g' | \
sed -r '/(\/).*$/d' | \
sed -r 's/^.*\s+//g' | \
sed '/^$/d'> "${destination}"
Packe dass in ein Script und lass rufe es mit ./script.sh input output auf. Mit cat output.txt | grep -E '^2' -n bekommst du eine Liste mit Zeilennummern. Dann musst du händisch danach suchen.