29 Feb 2020
1 minutes read
FB4 Log Fail2ban Messages to SyslogLog Fail2ban Messages to Syslog
With quite a few servers accepting SSH connections and protecting themselves using fail2ban, you very quickly recognize …
Advanced Topics
20 Feb 2020
2 minutes read
FB4 How To: Use Filesystem Labels in /Etc/FstabHow To: Use Filesystem Labels in /Etc/Fstab
Yesterday I have shown how to manage ext2/ext3/ext4 filesystem labels using e2label command. Continuing this topic, …
18 Feb 2020
2 minutes read
FB4 List Available Repositories in Red HatList Available Repositories in Red Hat
I have finally gotten around to launching a new RHEL 8.1 virtual machine on my macOS desktop, this time I installed it …
16 Feb 2020
2 minutes read
FB4 Systemd Unit TypesSystemd Unit Types
I’m catching up on my systemd knowledge, this is almost a note to myself – a summary of the systemd unit types …
08 Feb 2020
4 minutes read
Host Key Verification Failed
When reinstalling servers with new versions of operating system or simply reprovisioning VMs under the same hostname, …
03 Feb 2020
2 minutes read
FB4 Shutdown vs HaltShutdown vs Halt
Getting the difference between shutting a Unix system down versus halting it is kind of important. Graceful shutdown …
01 Feb 2020
1 minutes read
FB4 Show Files Installed by a Debian/Ubuntu PackageShow Files Installed by a Debian/Ubuntu Package
Sometimes it’s not enough to know that a certain package is installed on your Linux system. You want to know the …
17 Jan 2020
5 minutes read
FB4 DEBUG: Cron Keeps Piling Up in MacOSDEBUG: Cron Keeps Piling Up in MacOS
So, long story… After upgrading to macOS Catalina my years-old automount.sh script running via cron stopped working. …
16 Jan 2020
2 minutes read
FB4 Advanced USB Discovery With Usb-DevicesAdvanced USB Discovery With Usb-Devices
If you’re working with USB devices a lot, Linux platform offers a great way to learn more about what you have …
07 Jan 2020
5 minutes read
FB4 Confirm Actively Listening TCP Ports With LsofConfirm Actively Listening TCP Ports With Lsof
I was researching SSH daemon configuration on my macOS Catalina system and realised that lsof is still the best tool for …
How to Resize Filesystem With Resize2fs
How To Resize Filesystem with resize2fs
Quick note on filesystem resize on a typical …
macOS Tahoe
macOS Tahoe is the upcoming major release of macOS …
Centralized Bash history with timestamps
BASH is my Linux shell of choice (it’s zsh on …
Inspect filesystem operations with fs_usage in macOS
hey Unless you disable SIP, most of DTrace based …
How-To: Upgrade Ubuntu 23.04 to 24.10
I reliased one of my Raspberry Pi systems was …
macOS Sequoia 15.0
Apple keeps shipping public betas of macOS Sequoia …
Video: Has This Worked Before?
Another video on my YouTube channel …