How to sort a Linux directory by date
Use the following flags to order a directory listing by date in forward order: ls -lat To show a directory listing in reverse order, use
linux
How to vacuum journalctl
How to free up space if your Linux journal (combined log file) is taking up a lot of space On some systems /var/log might be
What is my IP address? How can I determine my IP address reliably from the command line using Linux?
Introduction This article explains how to get the IP address of a computer as viewed from the outside. The reason why you might want to
Bluetooth devices (mouse / headphones) not reconnecting automatically
You might end up in a situation where your Bluetooth devices do not re-connect automatically. The solution is: 1) apt remove blueberry -y && apt
How can you see how many virtual CPUs / vCPU cores is on a VPS Hosted server?
Background It’s really useful to see how many virtual CPUs (vCPU) cores you have when you’ve just upgraded your VPS hosting. Use the command below
How to see what’s running on a port in Linux
user@hostname ~ $ sudo lsof -i -P -n | grep LISTEN | grep 1025 mailcatch 1104 root 9u IPv4 27240 0t0
Linux Disk Space File System Management Commands
Introduction Here are some commands to assist with mastering disks and file space management on Linux. TL;DR ncdu is my preferred option. Disk Usage by
How to set up a fault tolerant / failover system on Linux
Problem: You need to make sure that your disks are 100% redundant. Solution: A popular way on Linux to do this is DRBD. Here are
Two good configuration files for DRBD and OCFS2
Problem: You need to know if your DRBD and OCFS2 disk fault tolerance has been setup correctly but the configuration options are overwhelming. Solution: See