The Meltdown and Spectre vulnerabilities affect many modern computer systems, including those running FreeBSD. The following are the steps to patch these vulnerabilities on a FreeBSD system: Ensure that your system is running the latest version of FreeBSD. The Meltdown and Spectre vulnerabilities were addressed in FreeBSD releases 11.1-RELEASE and later. You can check your … Read more
To update installed packages for security in Ubuntu 18.04, you can use the following steps: Open the terminal. Update the package index: sudo apt update Upgrade all installed packages to the latest available version, including security updates: sudo apt upgrade To update the installed packages specifically for security, you can use the following command: sudo … Read more
To set the hostname (computer name) of an Ubuntu system permanently, you need to modify two files: /etc/hostname and /etc/hosts. Here’s how to set the hostname in Ubuntu: Open the terminal. Use the following command to open the /etc/hostname file in a text editor: sudo nano /etc/hostname Enter the desired hostname in the file and … Read more
To redirect a non-www domain to a www domain over SSL in Nginx, you need to configure a server block in your Nginx configuration file. Here’s an example of how to do it: Open the Nginx configuration file in a text editor: sudo nano /etc/nginx/nginx.conf Add the following code to the file, replacing example.com with … Read more
The dig command is not included in the default installation of Red Hat Enterprise Linux 8 (RHEL 8). However, you can install it using the package manager, dnf. Here’s how to install dig on RHEL 8: Log in to the RHEL 8 server as a root user or with sudo privileges. Run the following command … Read more
To find the IP address of a Linux KVM guest virtual machine, you have several options: Check the DHCP server logs: If the virtual machine is configured to obtain its IP address from a DHCP server, you can check the DHCP server logs to find the assigned IP address. The location of the logs may … Read more
To find the serial number of a Lenovo laptop from Linux, you can use the dmidecode tool. dmidecode is a tool for reading the System Management BIOS (SMBIOS) table, which contains information about the system’s hardware components, including the serial number. Here’s how to find the serial number of a Lenovo laptop from Linux: Open … Read more
To update a SuSE Enterprise Linux (SLES) server using the command line, you can use the zypper package manager. Here are the steps to patch update SLES: Log in to the SLES server as a root user or with sudo privileges. Update the package repositories by running the following command: zypper refresh Install any available … Read more
You can set the User-Agent header in a cURL request on Linux or Unix using the -H option. The User-Agent header is used by the server to identify the client software and version. Here is an example of how to set the User-Agent header in a cURL request: curl -H “User-Agent: MyClient/1.0” https://www.example.com In this … Read more
FreeNAS allows you to backup and restore its configuration file, which is stored as a .db file and contains all the settings, users, and shares that have been configured on the system. Here are the steps to backup and restore the FreeNAS configuration file: Backup Configuration: Log into the FreeNAS web interface as an administrator. … Read more