07 Jan 2020
5 minutes read
FB4 Confirm Actively Listening TCP Ports With LsofConfirm Actively Listening TCP Ports With Lsof
**Listening TCP ports in macOS** I was researching SSH daemon configuration on my macOS Catalina system and realised …
Advanced topics
17 Dec 2019
3 minutes read
FB4 Protecting Directories With Sticky BitProtecting Directories With Sticky Bit
One of the least used and usually forgotten features in Linux/Unix filesystems, …
04 Oct 2019
3 minutes read
FB4 Show Process Limits Using /Proc FilesystemShow Process Limits Using /Proc Filesystem
**Show process limits with /proc filesystem** I think I mentioned the special /proc filesystem before, it’s …
26 Sep 2019
2 minutes read
FB4 Attach Interface to Specific Firewall Zone in RHEL 8Attach Interface to Specific Firewall Zone in RHEL 8
One of the first things I had to do on my recently built RHEL 8 PC was to move the primary network …
20 Sep 2019
2 minutes read
FB4 How to Show LUKS Passphrase SlotsHow to Show LUKS Passphrase Slots
[**Unix Tutorial**][1] As you might know, it’s possible to add multiple passphrases to the same LUKS encrypted …
13 Sep 2019
2 minutes read
FB4 Confirm Firewall Configuration in RHEL 8Confirm Firewall Configuration in RHEL 8
**List Firewall Rules in RHEL 8** I’m fascinated by the improvements and new features in RHEL 8, plus it’s a …
08 Sep 2019
1 minutes read
FB4 Specify User per Task in AnsibleSpecify User per Task in Ansible
**become_user per task in Ansible** Turns out, become_user directive can be used not only for privilege escalation …
04 Sep 2019
2 minutes read
FB4 Setting Alternatives Path for Python Command in RHEL 8Setting Alternatives Path for Python Command in RHEL 8
**alternatives: python to /usr/bin/python3** Red Hat Enterprise Linux 8 comes with support for both Python 2 and Python …
23 Aug 2019
3 minutes read
FB4 Show Monitor Resolutions With XrandrShow Monitor Resolutions With Xrandr
One of the things still left to be done on my Ubuntu laptop is to get the full resolution output on my LG 5K monitor. …
19 Aug 2019
3 minutes read
FB4 Deploy Your SSH Key to Remote ServerDeploy Your SSH Key to Remote Server
One of the greatest improvements introduced by the SSH protocol is key-based …
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I learn with Educative:
Video: What Browser Do You Use?
Another fairly recent video on my YouTube channel: …
macOS Sonoma 14.0
Apple just released new version of macOS, …
Homelab: Mac Pro 2013 32GB
Did I mention that I have recently purchased the …
Video: Has This Worked Before?
Another video on my YouTube channel …
macOS Sequoia 15.0
Apple keeps shipping public betas of macOS Sequoia …
How-To: Upgrade Ubuntu 23.04 to 24.10
I reliased one of my Raspberry Pi systems was …
Inspect filesystem operations with fs_usage in macOS
hey Unless you disable SIP, most of DTrace based …