How many times have you entered ipconfig /all at the command line to return a single IP address, then have to strain your eyes sifting through mostly unwanted networking info (subnet mask/gateway/DNS/mac address)? As a sysadmin, after rinsing and repeating this process nearly every day of your waking sysadmin life, this tends to lean towards the monotonous […]
You can install packages using dpkg. dpkg is quite a useful command line tool. In addition to installing packages, dpkg also helps to remove packages and know the status of packages. While checking the status of packages using dpkg, you may come across the state rc.
Memory you have hot added in Linux guest virtual machines is not registered using the free or top commands.
This issue occurs when Linux requires manual intervention to expose the newly added memory in the guest. The process is called setting the memory to online.
To resolve this issue, set the memory online in RHEL/CentOS, and Ubuntu/Debian.
This guide will explain how to migrate and dockerize an existing WordPress installation without running Apache. Most other tutorials I've seen combine multiple services inside of one container, while this article tries to maintain the standard of one service per container for easier isolation, troubleshooting, performance, and scale-out. This consists of configuring multiple Docker containers with docker-compose on […]
Shell script to move the Docker Root directory on Ubuntu 16.04 Xenial. Get this script on GitHub or download directly.
To use this script simply edit the line /dockerdir_new='/docker/var/' to reflect your intended new Docker Root location and chmod +x move-docker-root.sh, then run with ./move-docker-root.sh.
Linux Screen allows you to:
Use multiple shell windows from a single SSH session.
Keep a shell active even through network disruptions.
Disconnect and re-connect to shell sessions from multiple locations.
Run a long running process without maintaining an active shell session.