Adobe Flash Player is not included in Debian 7 Wheezy by default, but you can install it manually. Here’s how: Download the latest version of the Flash Player plugin for Linux from the Adobe website: https://get.adobe.com/flashplayer/ Extract the downloaded archive and navigate to the extracted folder in the terminal. Install the package using the following … Read more
GCC (GNU Compiler Collection) is not included in Mac OS X by default, but you can install it using Xcode. Here’s how: Install Xcode: You can download Xcode from the Mac App Store or from the Apple Developer website. Open Xcode and go to “Preferences.” Go to the “Downloads” tab and select “Command Line Tools.” … Read more
On CentOS/RHEL, you can use the systemctl command to check if a service is running or not. Example: systemctl is-active <service-name>.service Replace <service-name> with the actual name of the service you want to check. The .service extension is necessary to specify that it is a system service. The systemctl is-active command returns “active” if … Read more
On macOS, you can use the wakeonlan command-line utility to send a Wake-on-LAN (WOL) magic packet to wake up a server. You’ll need to know the MAC address of the network interface that you want to wake up. You can typically find this information in the server’s documentation or by using a network scanner tool. … Read more
You can use the du command in a terminal to find the size of a directory in Linux. Example: du -sh /path/to/directory The -s flag summarizes the directory size, and -h displays the output in a “human-readable” format (i.e., in GB or MB, instead of blocks). Replace /path/to/directory with the actual path to the … Read more
You can create a .tar.gz file in Linux using the tar command. The basic syntax is as follows: tar -czvf file_name.tar.gz directory_to_compress Here’s what each option does: c: Create a new archive. z: Compress the archive using gzip. v: Display verbose output, showing the progress of the compression process. f: Specify the filename of the … Read more
You can use the lsof command to find out which ports are open on a Linux system: lsof -i This will display a list of all open Internet sockets and the processes that have opened them. The -i option is used to specify that you only want to display information about Internet sockets. You can … Read more
You can find out the wireless connection speed rate on Mac OS X by using the following steps: Click on the Wi-Fi icon in the menu bar and select “Open Network Preferences.” In the Network Preferences window, select the Wi-Fi connection that you’re currently using. Click on the “Advanced” button. In the Advanced window, you’ll … Read more
When working with floating-point numbers in awk, unexpected results may occur due to the limitations of floating-point arithmetic. Floating-point numbers are stored in a binary format, which can cause inaccuracies in arithmetic operations, especially when adding or subtracting large or small numbers. Here are some tips to avoid unexpected results when working with floating-point numbers … Read more
To redirect mobile/smartphone traffic to the mobile version of a website using Nginx, you can use the if directive in your Nginx configuration file. Here’s an example configuration that redirects all mobile devices to a separate URL: server { listen 80; server_name example.com; root /var/www/example.com; if ($http_user_agent ~* ‘(iPhone|iPod|blackberry|android.*mobile|windows.*phone)’) { return 302 http://m.example.com$request_uri; } # … Read more