This simple bash script checks your current public IP and compares it to the previous days public IP (depending on cron job). Email alert is sent if IP has changed.

Credit goes to Ronny Bull – http://ronnybull.com/2011/08/10/bash-dynamic-public-ip-address-monitor-script/

Pre-req – install curl and postfix

apt-get install curl
apt-get install postfix

Bash script:

Install Samba:

apt-get install samba

Edit the samba config file:

vi /etc/samba/smb.cnf

Append the following to the bottom of the config file:

[Myshare]
comment = My Share
read only = no
locking = no
path = /home/share
guest ok = no
browsable = yes
writable = yes
valid users = @sharegroup

*path = path to the folder you are sharing
*@sharegroup – this is the user group which will be created below