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To find out how many simultaneous connections your Apache server can handle, you need to check the configuration of the Multi-Processing Module (MPM), whether it is mpm_prefork, mpm_worker, or mpm_event. The number of allowed connections depends on settings like MaxRequestWorkers (previously known as MaxClients). Steps: Open the Apache configuration file, usually located at /etc/apache2/apache2.conf or [...]
The grep command is widely used in Unix/Linux systems to search for patterns in text files. It’s useful for filtering lines that match a specific text or regular expression. Basic syntax grep [options] "pattern" file pattern: The text or regular expression you want to search for. file: The file where you want to perform the [...]
The error you're encountering, "PHP Fatal error: Uncaught Error: [] operator not supported for strings", indicates that in the file base-admin.class.php of the Revolution Slider (or RevSlider) plugin, you are trying to use the [] operator to add a value to a variable that has been declared as a string. The [] operator is used [...]
When working with SFTP (SSH File Transfer Protocol), you might need to download an entire directory from a remote server to your local machine. Here's how you can do it. 1. Connecting to the SFTP Server First, you need to connect to the SFTP server. You can do this from the command line using the [...]
1. Install Lsyncd First, install Lsyncd on the main server where you want to set up synchronization. For Debian/Ubuntu-based systems: sudo apt-get update sudo apt-get install lsyncd For Red Hat/CentOS-based systems: sudo yum install epel-release sudo yum install lsyncd 2. Generate SSH Public Key Generate an SSH key pair (public and private keys) on the [...]
This error generally means that Lsyncd encountered an issue while trying to start. Common causes may include: Configuration Problems: Check that your Lsyncd configuration file (/etc/lsyncd/lsyncd.conf.lua) is free of syntax errors or incorrect parameters. Insufficient Permissions: Ensure that Lsyncd has the necessary permissions to access the directories and files it is trying to sync. Network [...]
1. Introduction to lftp lftp is a command-line client for transferring files via FTP, FTPS, HTTP, HTTPS, and other protocols. It is very versatile and offers advanced features like resuming downloads, directory synchronization, and background operations. 2. Installing lftp To install lftp on a Debian/Ubuntu-based system, use the following command: sudo apt-get update sudo apt-get [...]
rsync is a powerful file synchronization and transfer tool used in Linux systems. It allows copying and synchronizing files and directories between different locations, either locally or between remote systems. Below is a step-by-step guide on how to use rsync with practical examples. 1. Installing rsync In most Linux distributions, rsync comes pre-installed. However, if [...]
1. Introduction to Lsyncd Lsyncd (Live Syncing Daemon) is a tool that combines file system monitoring using inotify with the file synchronization capabilities of rsync. It's ideal for near real-time synchronization between servers, especially when a simple and efficient solution is needed. 2. Installing Lsyncd To install Lsyncd on a Debian/Ubuntu-based system, use the following [...]
To synchronize files in real-time between two servers, there are several solutions you can consider: rsync with inotifywait: Use rsync in combination with inotifywait. inotifywait monitors file system changes on server A, and every time a change is detected, rsync synchronizes the files with server B. This method is very efficient for almost real-time synchronization. [...]
