02 Jul 2014
3 minutes read
Most Important Sshd Configuration Options
SSH, or Secure SHell, allows the user of one computer on the network to connect to and use the shell of another over a …
Linux
02 Jul 2014
5 minutes read
Useful Options for Mount and Umount
In UNIX and Linux operating systems everything resides in a tree like structure rooted at /, the root directory. This …
02 Jul 2014
3 minutes read
Using Nice and Renice to Change Process Priority
Every process in UNIX runs with a particular priority assigned to it, which determines how much processing time should …
28 May 2014
2 minutes read
How To: Make IP Forwarding Permanent in Linux
While IP forwarding in Linux is disabled by default, as most people don’t need it, there may be various reasons …
27 Nov 2012
1 minutes read
Questionnaire for My Upcoming Linux Administration Ebook
If you’re planning to acquire or expand Linux System Administration skills anytime soon, you may find my upcoming …
01 Aug 2012
1 minutes read
Are You a CentOS User? Will You Switch to Oracle Linux?
Have recently found out that Oracle Linux is now completely free to get and to use, meaning that you’ll only have …
29 Apr 2012
6 minutes read
Using Dropbox With Unix
Although last week saw some pretty exciting developments in the cloud storage (Google Drive announcement and SkyDrive …
10 Mar 2011
3 minutes read
Upgrading Ubuntu With Do-Release-Upgrade
There comes a time (a couple of times a year, actually) when you may want to upgrade your Ubuntu distro (read here for …
02 Dec 2009
3 minutes read
How to Disable IPv6 in Red Hat Linux
Since it may be a while before I’m ready to use the IPv6 on my systems, I’ve been disabling IPv6 on most …
11 May 2009
2 minutes read
How to Confirm Disks Capacity in Linux
show disk size in Unix is a very popular request visitors use to arrive at my Unix Tutorial pages. Since I never …
How to decrypt files with Ansible Vault
ansible-vault decrypt restores an encrypted file …
Just discovered the macOS footprint command
I’ve administered Linux systems for around 25 …
How to Fix Ubuntu Packages Held Back
When trying to run do-release-upgrade on an Ubuntu …
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 …