Archive for October, 2025

Running old versions of Java Minecraft

October 22nd, 2025 – 5:27 pm
Tagged as: Computing Notes

One source for the Java 8 (1.8) runtime is the Oracle Archives page.  Another helpful one is the standard Java download page for the desktop Java Runtime Environment, JRE. I downloaded the Linux x86 (32-bit) version even though the host is a 64bit Linux.  The reason for that is that at some point in the [...]

.ssh config for Windows and Linux

October 18th, 2025 – 7:26 pm
Tagged as: Computing Notes

The ~/.ssh/config file works for OpenSSH on Windows and for SSH on Linux. To prevent disconnects, add the keepalive messages for all hosts. For specific hosts that use a specific key type, such as RSA on CentOS 6, add the specific algorithm via the HostkeyAlgorithms + functionality. To add a private key for SSH key [...]

Switch a data volume on Linux

October 17th, 2025 – 7:10 pm
Tagged as: Computing Notes

How to move /var/www/html/mydata/ to a new disk: 1. fdisk /dev/nvme4n1      1.i. create a new DOS partition and write it to disk 2. mkfs -t ext4 /dev/nvme4n1p1 3. lsblk -f (and copy the UUID for use in FSTAB)     3.i. a0e2e1e7-4034-4876-a005-ae5fcca39751 4. mount /dev/nvme4n1p1 /mnt 5. shopt -s dotglob 6. rsync -aulvXpogtr /var/www/html/mydata/* /mnt 7. edit [...]