sblock

A tiny bash script that downloads hosts sources in parallel, sanitizes them, and installs them in /etc/hosts.

It's practically very similar to hblock. To migrate from hblock, just copy /etc/hblock to /etc/sblock.

Dependencies: bash, GNU coreutils, sed, aria2.

Install

If you're an Arch Linux user, you can install it from the AUR:

$ paru -S sblock-git

Otherwise clone the repository and run sudo make install. To uninstall, run sudo make uninstall.

This will also install a cron entry in /etc/cron.daily, which will cause sblock to run once a day (that is if you have a cron software like cronie or fcron installed and running on your machine).

Usage

Just put some hosts sources in /etc/sblock/sources.list and run sblock:

$ sblock

Internet connectivity check

If NetworkManager is running on your system, sblock will use it to wait until internet connectivity is detected on your system. Otherwise, connectivity check is skipped. You can force-skip this check by passing the -n flag to sblock.

Config files

Similar to hblock, the hosts file generated by sblock is configured through 4 files:

/etc/sblock/sources.list
/etc/sblock/allow.list
/etc/sblock/deny.list
/etc/sblock/header

The only mandatory file is sources.list. The other three are optional.

sources.list

Just put a list of your sources in the /etc/sblock/sources.list file:

$ cat /etc/sblock/sources.list
https://raw.githubusercontent.com/4skinSkywalker/Anti-Porn-HOSTS-File/master/HOSTS.txt
https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/porn/hosts
https://raw.githubusercontent.com/koonix/hosts/master/hosts

allow.list

You can also put hosts that you don't want to block, in /etc/sblock/allow.list, one per line:

$ cat /etc/sblock/allow.list
1337x.to
www.1337x.to
rarbg.to
www.rarbg.to
imgur.com
www.imgur.com

deny.list

Add additional hosts that you want to block to /etc/sblock/deny.list . If it exists, it's content will be added to the hosts file.

Entries in deny.list are applies after the allow.list file. So if an entry exists in both allow.list and deny.list, it will be added to the hosts file (and thus denied).

$ cat /etc/sblock/deny.list
ads.reddit.com
nsfw.reddit.com

header

Contents of the file /etc/slock/header are added in a block at the top of your hosts file, and it's home to localhost entries.

If the header file doesn't exist, sblock will add the following entries as the header (if you don't want this, make /etc/sblock/header an empty file):

127.0.0.1       localhost
127.0.1.1       $HOSTNAME.localdomain $HOSTNAME
::1             localhost ip6-localhost ip6-loopback
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters
255.255.255.255 broadcasthost

In the above block, $HOSTNAME is your machine's hostname, as provided by uname -n.