Installation • Usage • Running gtb • Notes

gtb is a "shortcut" to adding, removing or replacing hosts in /etc/hosts file. Made for *nix, but hypothetically can work with Windows hosts file (c:\Windows\System32\Drivers\etc\hosts). You need root privileges to edit /etc/hosts, so run the tool as root or with sudo.

Installation

go install -v github.com/tokiakasu/go-to-box/cmd/gtb@latest

Usage

gtb -h

This will display help for the tool.

Add, remove or replace hosts in the hosts file
Usage: gtb { mode } { argument(s) } 
-rm	Mode to remove all domains with a specified TLD
-add	Mode to add host to hosts file
-re	Mode to remove all domains with specific TLD to replace them wtih another IP and domain
-i	Value for domain IP address
-d	Value for domain name

There are only 3 types of program execution scenarios:
gtb -rm <tld>                                Remove all <tld> domains from hosts file
gtb -add -i <IP> -d <domain>                 Add <IP> address and <domain>
gtb -re -i -rm <tld> -i <IP> -d <domain>     Remove all <tld> domains and add <IP> with <domain>

Running gtb

Remove all domains with specified TLD

/etc/hosts before

# Host addresses
127.0.0.1    localhost
10.129.162.54    therockers.com
10.120.143.99    thecreators.com
10.129.161.44    thetoppers.htb

This will delete all .com domains

# gtb -rm com

Domains removed successfully

/etc/hosts after

# Host addresses
127.0.0.1    localhost
10.129.161.44    thetoppers.htb

Add new IP address and domain name

/etc/hosts before

# Host addresses
127.0.0.1    localhost
10.129.162.54    therockers.com

This will add the IP address 10.129.161.44 and the domain name thetoppers.htb at the end of the hosts file

# gtb -add -i 10.129.161.44 -d thetoppers.htb

Domain added successfully

/etc/hosts after

# Host addresses
127.0.0.1    localhost
10.129.162.54    therockers.com
10.129.161.44    thetoppers.htb

Replace old domains with new ones

/etc/hosts before

# Host addresses
127.0.0.1    localhost
10.129.162.54    therockers.htb
10.120.143.99    thecreators.htb
10.129.161.44    thetoppers.htb

This will remove all .htb domains and add the IP address 192.168.0.50 with domain name ftp.localx.com at the end of the hosts file

# gtb -re -rm htb -i 192.168.0.50 -d ftp.localx.com

Domain replaced successfully

/etc/hosts after

# Host addresses
127.0.0.1    localhost
192.168.0.50    ftp.localx.com

Notes

• gtb works with only one TLD, IP address or domain name at a time
• The path to the hosts file is set in hostsPath variable within main() function. Feel free to change it.
• To be honest, writing this tool by using only internals libs, especially flag library was a real pain challenge.