UNIX fu – Living with UNIX and other command line based systems

How to split DNS DKIM records

Post author:Peter Bruderer
Post published:16.07.2020
Post category:DNS

DNS TXT records do have a limitation. Strings must not be longer than 255 Bytes. This limitation can hurt you with SPF records or DKIM records. In this case you…

Show open ports on Mac

Post author:Peter Bruderer
Post published:15.12.2019
Post category:Apple

If you want to know which ports are open on your Mac, you can use built-in tools in terminal: lsof -i -P | grep -i "listen" This gives you a…

Create a Centos Repository Mirror

Post author:Peter Bruderer
Post published:06.05.2019
Post category:Linux

Quite a few companies do not allow direct connections from the internal servers to the Internet. This is usually no problem, beside the time, when you want to update your…

Using Apple Mac Keyboard with Ubuntu

Post author:Peter Bruderer
Post published:30.04.2018
Post category:Apple Linux

You are a Mac user and run Linux machines virtually on your Macbook or your console keyboard is an Apple Mac Keyboard. Ubuntu Linux sets the keyboard parameters in the…

Fortigate Firewall Command Tree

Post author:Peter Bruderer
Post published:21.02.2018
Post category:Fortinet

If you want to know which commands exist on a FortiGate, type tree on the command line. You get the whole command structure of the installed operating system. config antivirus…

Config Save Revert on a FortiGate

Post author:Peter Bruderer
Post published:21.02.2018
Post category:Fortinet

By default, a FortiGate does autosave the configuration, every time you press Apply or OK in the GUI. On the CLI the config becomes active and is saved when you…