update

1 files changed, 26 insertions, 0 deletions

diff --git a/bin/update_hosts b/bin/update_hosts
new file mode 100755
index 0000000..40ec470
--- /dev/null
+++ b/bin/update_hosts
@@ -0,0 +1,26 @@
+#!/bin/sh -e
+
+# Update /etc/hosts with a well curated blacklist of malware, ads, porn, etc.
+# Custom hosts are preserved.
+
+[ "$USER" = root ] || exec sudo "$0" "$@"
+
+echo 'Checking from https://github.com/StevenBlack/hosts:'
+lsd=$(curl -s 'https://api.github.com/repos/StevenBlack/hosts/commits?path=hosts&page=1&per_page=1' | jq -r '.[0].commit.committer.date')
+echo "last source update: $(date -j -f "%FT%TZ" "$lsd")" 
+echo "last local  update: $(date -r /etc/hosts)"
+[ $(date -j -f "%FT%TZ" "$lsd" +%s) -lt $(date -r /etc/hosts +%s) ] && echo 'Nothing to do' && exit
+
+cd /etc
+cp -p hosts hosts.old
+hosts=$(awk '/^# Custom host/, /^# End of custom host/' hosts.old)
+curl -s 'https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts' | awk '
+  BEGIN                   { hosts = ARGV[1]; ARGV[1] = "" }
+  /^# Custom host/        { print hosts; next }
+  /^# End of custom host/ { next }
+  { print }
+' "$hosts" > hosts.new
+
+mv hosts.new hosts
+[ "$(uname -s)" != Darwin ] || { dscacheutil -flushcache; killall -HUP mDNSResponder; }
+diff -u /etc/hosts.old /etc/hosts | diffstat