To check the health status of disks behind Adaptec RAID controllers in Linux, you can use the smartctl utility. Here’s how: Install the smartmontools package, if it’s not already installed, by running the following command: sudo apt-get install smartmontools (for Debian-based systems) or sudo yum install smartmontools (for Red Hat-based systems) Find the device file … Read more

To start a virtual machine using KVM at boot time, you can follow these steps: Install KVM and the required utilities, such as libvirt, virt-manager, and qemu-kvm. Create a virtual machine using virt-manager or the virsh command line utility. Make sure that the virtual machine is in the “running” state. Check the virtual machine’s XML … Read more

The du command in Linux can be used to display the size of files and directories in a human-readable format, such as GB, MB, or TB. To do this, use the -h or –human-readable option, as follows: $ du -h /path/to/directory This will display the size of the directory and its contents in a human-readable … Read more

To execute a shell script in Linux or UNIX, you can use the following command in the terminal: $ sh script.sh Replace “script.sh” with the name of your shell script. Alternatively, you can make the script executable by changing its permissions and then simply run it as an executable file: $ chmod +x script.sh $ … Read more

To reboot a Linksys WAG160N, WAG54, WAG320, or WAG120N router or gateway, you can follow these steps: Open a web browser and enter the IP address of the router in the address bar. The default IP address is typically “192.168.1.1”. Enter the administrator username and password. The default username is “admin” and the default password … Read more

Installing OpenBSD as a guest operating system on a KVM host can be done using the virt-install command line tool. Here’s a basic guide to help you get started: Download the latest OpenBSD ISO image from the OpenBSD website. Create a virtual machine configuration file using the virt-install command. The following example creates a virtual … Read more

The error message “read_urandom: /dev/urandom: open failed: No such file or directory” indicates that the system is unable to open the /dev/urandom device, which is used to generate random numbers for various system functions, including cryptography. This error can occur due to a number of reasons, including: Incorrect permissions on the /dev/urandom device: The /dev/urandom … Read more

The error message “SELinux is preventing the squid (squid_t) from binding to port 5000” indicates that SELinux is blocking the Squid proxy server from listening on port 5000. This is because SELinux is configured to enforce strict policies on which services are allowed to bind to which network ports. To resolve this issue, you can … Read more

The issue of an OpenBSD guest hanging at “Starting tty flags” on a Linux KVM host is often caused by a compatibility issue between the OpenBSD kernel and the virtualization technology used by KVM. Here are a few steps you can try to resolve the issue: Upgrade to the latest version of KVM and OpenBSD. … Read more

On Red Hat Enterprise Linux (RHEL) 6 Beta, you can use the yum command to install packages without using the Red Hat Network (RHN) by configuring yum to use a local repository or a repository on a network file system (NFS). Here’s how you can do this: Create a local repository: If you have the … Read more