To flush the DNS forwarder cache in pfSense, you can follow these steps: Log in to the pfSense web interface. Navigate to Services > DNS Forwarder. Click the “Clear Cache” button located at the top of the page. The DNS forwarder cache is now cleared and any changes to the DNS records will be immediately … Read more
To increase the maximum upload size to 100 MB in PHP running on Apache, you can follow these steps: Open the PHP configuration file: sudo nano /etc/php/7.x/apache2/php.ini Change the following values: upload_max_filesize = 100M post_max_size = 100M Save and close the file. Restart Apache: sudo systemctl restart apache2 The maximum upload size has now been … Read more
You can use LXD (Linux containers) in a shell script to create a virtual machine (VM) when a cloud instance launches by following these steps: Install LXD: sudo apt-get update sudo apt-get install lxd Initialize LXD: sudo lxd init Create a new container: sudo lxc launch ubuntu:18.04 <container_name> Create a shell script to launch the … Read more
To disable the fast mirror plugin in a CentOS Linux server, you can follow these steps: Open the Yum configuration file: sudo nano /etc/yum/pluginconf.d/fastestmirror.conf Change the enabled setting to 0: [main] enabled=0 Save and close the file. Update the Yum cache: sudo yum makecache The fast mirror plugin is now disabled, and Yum will no … Read more
To install GoAccess web log analyzer with Nginx on Linux or Unix, you can follow these steps: Install GoAccess: sudo apt-get update sudo apt-get install goaccess Install Nginx: sudo apt-get update sudo apt-get install nginx Configure Nginx to log access data: Edit Nginx’s nginx.conf file and add the following log format to the http block: … Read more
You can run multiple commands as sudo by separating the commands with a semicolon (;) or by using a shell script. Using semicolon: sudo command1 ; sudo command2 ; sudo command3 Using a shell script: Create a shell script with the commands you want to run, make it executable and then run it with sudo: … Read more
To update and upgrade Pi-hole on an Ubuntu/Debian Linux server with OpenVPN, you can follow these steps: Connect to your OpenVPN server: sudo openvpn –config client.ovpn Update the package lists: sudo apt-get update Upgrade the installed packages: sudo apt-get upgrade Update Pi-hole: sudo pihole -up Note: The exact commands may vary depending on your setup … Read more
You can run commands in parallel in the bash shell using the “&” operator to run a command in the background, and the “wait” command to wait for all background jobs to complete. For example: # Run command1 in the background command1 & # Run command2 in the background command2 & # Wait for all … Read more
In Alpine Linux, you can install the logrotate package using the apk package manager: $ apk add logrotate Once logrotate is installed, you can configure it by editing the /etc/logrotate.conf file. This file contains the global options for logrotate, such as the default rotation interval and the default compression method. For example, to rotate logs … Read more
In Alpine Linux, you can install man pages for packages using the apk package manager. To install the man pages for a specific package, you can use the following command: $ apk add <package_name>-doc Replace <package_name> with the name of the package for which you want to install the man pages. For example, to install … Read more