To list, display, and view all cron jobs in Linux, you can use the following methods: List all cron jobs for the current user: To list all the cron jobs that are scheduled for the current user, use the following command: crontab -l This will display the list of all the scheduled cron jobs for … Read more

To clear the shell history in Ubuntu Linux, you can follow these steps: Open a terminal window. To clear the entire shell history, use the following command: history -c This will clear all the commands from the history file. If you want to clear a specific command from the history, you can use the history … Read more

To install the DJBdns server on FreeBSD, you can follow these steps: Update the FreeBSD package repository by running the following command: sudo pkg update Install the daemontools package, which provides the svscan command required to start the DJBdns service: sudo pkg install daemontools Download the latest version of DJBdns from the official website using … Read more

To change the web server signature headers in Varnish, you can modify the VCL (Varnish Configuration Language) file used by Varnish. Here are the steps to follow: Open the VCL file in a text editor. On Ubuntu and Debian systems, the default VCL file is located at /etc/varnish/default.vcl. sudo nano /etc/varnish/default.vcl Add the following lines … Read more

To find out the version of Python installed on your system, you can use the python command in a terminal window. Here are the steps to follow: Open a terminal window on your system. Type the following command and press Enter: python –version This command will display the version of Python installed on your system. … Read more

To find out the BIOS version of your Linux system using a command line option, you can use the dmidecode utility, which is a tool for retrieving information about the system’s hardware configuration from the BIOS. Here are the steps to follow: Open a terminal window on your Linux machine. Type the following command to … Read more

To restart the Nginx web server on a Linux system, you can use the systemctl command, which is the standard system and service manager used by most modern Linux distributions. Here are the steps to follow: Open a terminal window on your Linux machine. Type the following command to restart the Nginx service: sudo systemctl … Read more

To install the kernel source code and headers on Ubuntu Linux, you can use the apt-get package manager. Here are the steps to follow: Open a terminal window on your Ubuntu machine. Update the package list by running the following command: sudo apt-get update Install the kernel source code and headers by running the following … Read more

To remove all partitions and data from a disk and create an empty disk in Linux, you can use the fdisk utility, which is a standard disk partitioning tool available on most Linux distributions. Here are the steps to follow: WARNING: These steps will permanently delete all data on the disk. Please ensure that you … Read more

To list or install only security updates in RHEL / CentOS using yum, you can use the yum-plugin-security package. Here are the steps to follow: Install the yum-plugin-security package by running the following command as the root user: yum install yum-plugin-security Once the package is installed, you can list all available security updates by running … Read more