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, sticky bit is a great way to manage …
Advanced topics
04 Oct 2019
3 minutes read
FB4 Show Process Limits Using /Proc FilesystemShow Process Limits Using /Proc Filesystem
I think I mentioned the special /proc filesystem before, it’s available in Linux distros and helps you obtain …
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 interface from …
20 Sep 2019
2 minutes read
FB4 How to Show LUKS Passphrase SlotsHow to Show LUKS Passphrase Slots
As you might know, it’s possible to add multiple passphrases to the same LUKS encrypted filesystem. This means …
13 Sep 2019
2 minutes read
FB4 Confirm Firewall Configuration in RHEL 8Confirm Firewall Configuration in RHEL 8
I’m fascinated by the improvements and new features in RHEL 8, plus it’s a primary distro used in most …
08 Sep 2019
1 minutes read
FB4 Specify User per Task in AnsibleSpecify User per Task in Ansible
Turns out, become_user directive can be used not only for privilege escalation (running Ansible playbooks as root), but …
04 Sep 2019
2 minutes read
FB4 Setting Alternatives Path for Python Command in RHEL 8Setting Alternatives Path for Python Command in RHEL 8
Red Hat Enterprise Linux 8 comes with support for both Python 2 and Python 3. But neither of them is invoked via running …
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 authentication – meaning your client and …
07 Aug 2019
5 minutes read
FB4 Advice: Safely Removing a File or Directory in UnixAdvice: Safely Removing a File or Directory in Unix
Removing files and directories is a very common task, so in some environments support engineers or automation scripts …
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