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How do I update Ubuntu using terminal command line
To update your Ubuntu system using the terminal command line, follow these steps:rn rn Open a terminal window. rn Update the package index: rn rn rn rn sudo apt update rn rn rn rn Upgrade all installed packages to the latest available version: rn rn rn rn sudo apt upgradern rn rn rn After the upgrad
How to change root password on Fedora Linux
To change the root password on Fedora Linux, you need to log in as the root user or use sudo to run the following steps:rn rn Open a terminal window. rn Type the following command to change the root password: rn rn rn rn sudo passwdrn rn rn rn Enter the current root password, and then follow the pro
How to patch Meltdown and Spectre vulnerabilities on FreeBSD
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:rn rn Ensure that your system is running the latest version of FreeBSD. The Meltdown and Spectre vulnerabiliti
Ubuntu 18.04 update installed packages for security
To update installed packages for security in Ubuntu 18.04, you can use the following steps:rn rn Open the terminal. rn Update the package index: rn rn rn sudo apt update rn rn rn rn Upgrade all installed packages to the latest available version, including security updates: rn rn rn rn sudo apt upgra
Ubuntu set hostname permanently (computer name) command
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:rn rn Open the terminal. rn Use the following command to open the /etc/hostname file in a text editor: rn rn rn rn sudo nano /
How to redirect Nginx non-www to www domain over SSL
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:rn rn Open the Nginx configuration file in a text editor: rn rn rn rn sudo nano /etc/nginx/nginx.confrn rn rn rn Add the following
RHEL 8 dig command not found – How to install dig on RHEL 8
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:rn rn Log in to the RHEL 8 server as a root user or with sudo privileges. rn Run the following comma
How to find ip address of Linux KVM guest virtual machine
To find the IP address of a Linux KVM guest virtual machine, you have several options: n n 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 va
How to find serial number of Lenovo laptop from Linux
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
How to patch update Suse Enterprise Linux server command
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:rn rn Log in to the SLES server as a root user or with sudo privileges. rn Update the package repositories by running the following command: rn rn r
Curl Set User Agent Command on Linux or Unix
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:rn rn rn curl -H "User-Agent: MyClient/1.0" http
How to backup FreeNAS configuration file and restore it
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. n Here are the steps to backup and restore the FreeNAS configuration file: n n Backup Configuration:n n Log into th
How to update Lenovo BIOS from Linux without using Windows
Updating the BIOS of a Lenovo computer from Linux can be done in several ways, depending on the specific model and the available tools provided by Lenovo. Here are a few methods that may work:rn rn Using the fwupdmgr tool: Some Lenovo systems may be compatible with the fwupdmgr tool, which is a firm
What does rm -rf command do on a Linux or Unix
The rm -rf command is used to remove (delete) files and directories on a Linux or Unix system. The rm command is used to remove files, while the -rf options are used to specify the behavior of the command. The -r option tells rm to remove directories and their contents recursively, including all
How to create FreeNAS Jails with iocage
Here are the steps to create a FreeNAS jail using iocage:rn rn Install iocage: iocage is included in FreeNAS 11.3 and later versions. To verify that iocage is installed, run the following command:rn rn rn iocage --version rn rn rn Create a Jail: To create a jail, run the following command:rn rn rn i
Iptables insert rule at top of tables ( PREPEND rule on Linux )
To insert an iptables rule at the top of the table (prepend a rule in Linux), you can use the -I option followed by the chain name and the position number 1 . Here's an example of how to prepend a rule that allows incoming SSH traffic:rn rn iptables - I INPUT 1 - p tcp --dport 22 -j ACCEPTrn rn r
How To Update Fedora Linux using terminal for latest software patches
Here are the steps to update Fedora Linux using the terminal for the latest software patches:rn rn Update Package Repositories: Before you can update Fedora, you need to update the package repositories with the latest package information. You can do this by running the following command:rn rn rn sud
How to install snapd on Fedora Linux system using dnf command
Here are the steps to install snapd on Fedora Linux system using the dnf command:rn rn Enable the Snapd Repository: Before you can install snapd, you need to enable the snapd repository by adding the following configuration to your /etc/dnf/dnf.conf file:rn rn rn rnname=Snapdrnbaseurl=https: //d own
How to change hostname in Fedora Linux permanently
To change the hostname in Fedora Linux permanently, you can follow these steps:rn rn Edit the Hostname File: Open the file /etc/hostname in a text editor and replace the current hostname with the desired hostname. Save and close the file. rn Edit the Hosts File: Open the file /etc/hosts in a text ed
How to install and set up LXD on Fedora Linux server
Here are the steps to install and set up LXD on Fedora Linux server:rn rn Install LXD: To install LXD on Fedora, you can use the following command:rn rn rn sudo dnf install lxdrn rn rn Initialize LXD: After installing LXD, you need to initialize it with the following command:rn rn sudo lxd init rn r
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