If you are encountering an issue where the yum command hangs on the message “Running transaction test,” it could be due to a variety of reasons, including network connectivity issues, a misconfigured repository, or a corrupted package database. Here are a few solutions you can try: Check network connectivity: Make sure that you have a … Read more
On a Dell server, desktop, or laptop running Linux, you can use the following command to find the service tag: sudo dmidecode -s system-serial-number This command will display the service tag of your Dell system by reading the system information from the DMI (Desktop Management Interface) table. The dmidecode command is a tool for dumping … Read more
If you are experiencing slow DNS resolution on a Linux system that has both IPv4 and IPv6 configured, there could be several reasons for the issue. Some possible causes and solutions include: Firewall rules: If your firewall is blocking DNS traffic, this could cause slow DNS resolution. To resolve this, you need to allow incoming … Read more
In the TCSH (also known as the C shell), you can check whether a directory is empty or not using the ls command and the test command. Here’s how: if ( ! (`ls -A $dir 2>/dev/null`) ) then echo “$dir is empty” else echo “$dir is not empty” endif In this example, the ls command … Read more
To save a file in Unix using the command line, you can use the vi editor. Here’s how: Open the vi editor: $ vi filename Replace filename with the name of the file you want to create. Press the i key to enter insert mode. Type or paste the content of the file. Press the … Read more
The “413 – Request Entity Too Large” error in Nginx occurs when a client tries to upload a file that is too large for Nginx to handle. This error can be solved by increasing the client_max_body_size directive in the Nginx configuration file. Here’s how: Open the Nginx configuration file: $ sudo nano /etc/nginx/nginx.conf Find the … Read more
You can remotely shut down a Linux or Unix computer from a Microsoft Windows computer using the ssh protocol and the shutdown command. Here’s how: Download and install an ssh client for Windows, such as PuTTY. Open the PuTTY client. In the Host Name (or IP address) field, enter the hostname or IP address of … Read more
To skip the first two fields and print the rest of the line using awk or cut, you can use the following command: With awk: $ awk ‘{$1=$2=””; print $0}’ input_file With cut: $ cut -d’ ‘ -f3- input_file Replace input_file with the name of your input file. The awk and cut commands will read … Read more
In Nginx, you can use the return directive to redirect a URL with the HTTP/1.1 301 Moved Permanently header. Here’s how: Open the Nginx configuration file: $ sudo nano /etc/nginx/nginx.conf Add the following code to the server block for the domain you want to redirect: server { listen 80; server_name <old_domain>; return 301 $scheme://<new_domain>$request_uri; } … Read more
To install the Firefox web browser on OpenBSD, you can use the pkg_add command. Here’s how: Open a terminal window. Update the package list: $ sudo pkg_add -u Install Firefox: $ sudo pkg_add firefox This will download and install the latest version of the Firefox web browser. Start Firefox: $ firefox & This will start … Read more