This article describes how to add lines to a file in linux.
Administration
How to Locate files in Linux with mlocate
This article show how to locate file easily in Linux. To install and update mlocate so as to use immediately.
Rsync Files Locally
How to copy to local directory with the same name.
ApacheSolr vulnerability CVE-2021-44228 for Log4j
A vulnerability in Apache Log4j, a widely used logging package for Java has been found. The vulnerability, which can allow an attacker to execute arbitrary code by sending crafted log messages, has been identified as CVE-2021-44228 and given the name Log4Shell. It was first reported privately to Apache on November 24 and was patched with version 2.15.0 of Log4j on December 9. It affects Apache Struts, Apache Solr, Apache Druid, Elasticsearch, Apache Dubbo, and VMware vCenter. Since then, it has been disclosed that in certain non-default conditions, the original patch was incomplete; this was designated as CVE-2021-45046 and a new version of Log4j, 2.16.0, has been released.
How to Add User to Sudoers on Ubuntu 20.04
Create a New User Open the root user terminal and run the following command: Add a user to the sudoers file Add with visudo Login as root. Run Add the user with: Save file. Ready to Go!
Cannot install nvidia-390 driver, ubuntu 21
Run sudo /usr/bin/nvidia-uninstall to uninstall a manually installed driver, if you still got one. Remove everything of your old NVIDIA driver (simulate first): If only nvidia packages are there to be removed, remove really: Run sudo apt update and ubuntu-drivers devices again. If nvidia-390 is still recommended, add your output of sudo ubuntu-drivers autoinstall again.
Jitsi Meet Install
Great Article: https://www.digitalocean.com/community/tutorials/how-to-install-jitsi-meet-on-ubuntu-18-04
Install Openfire
Best Article: https://www.atlantic.net/hipaa-compliant-hosting/how-to-install-openfire-ubuntu-20-04/
Restore ZFS Pool and storage data after a system re-install
The original installation of zpool was from a POPOS 20 install. After Installing a new Ubuntu system over the top of POPOS, the zpool was not listed. Here are the steps to restore the zpool. Install zfsutils Make a directory When trying to import, I received a notice: Import using the -f flag and the … Read more
Mount NTFS file system in Debian
How to mount a NTFS disk in Debian. Find the disk: So, the NTFS is disk sdb1. Find the UUID value. Install NTSF-3G: Create the /mnt/ntfs/ directory Add to fstab. Test it