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6 min readTo completely remove Jenkins from a Linux system, you can follow these steps:Stop Jenkins service: Open the terminal. Execute the command: sudo service jenkins stop Uninstall Jenkins packages: Execute the command: sudo apt-get -y remove jenkins Delete Jenkins configuration: Execute the command: sudo rm -rf /var/lib/jenkins If Jenkins was installed using the WAR file: Delete the Jenkins WAR file: sudo rm /usr/share/jenkins/jenkins.
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6 min readTo rename all the files in the current directory in Linux, you can use the 'mv' command along with a 'for' loop. Here's how you can do it:Open the terminal.Navigate to the desired directory using the 'cd' command.
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8 min readIn Linux, the socket buffer acts as a queue that holds incoming and outgoing network data for a socket. It allows the application to read or write data at its own pace, while the operating system takes care of buffering the data.To clear the socket buffer in Linux, you can follow these steps:Close the socket connection: If you want to clear the buffer for a specific socket, you should close the connection.
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7 min readTo reset your profile file on Linux, follow these steps:Open your terminal emulator. Locate your profile file. It is commonly named ".bashrc" or ".bash_profile" and is usually located in your home directory. You can navigate to your home directory by typing "cd ~" in the terminal. Open the profile file using a text editor such as nano or vim. For example, if your profile file is ".bashrc," type "nano ~/.bashrc" in the terminal and hit Enter.
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9 min readSetting folder permissions in Linux involves using the chmod command. Here is some information about how to set folder permissions:The chmod command stands for "change mode" and is used to modify the access permissions of files and directories in Linux. To set folder permissions, you need to use the numerical mode or symbolic mode of the chmod command.
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6 min readTo find request parameters in an Nginx reverse proxy, you can use the $args variable. This variable contains the query string parameters in the request URL.
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9 min readTo use one SSL certificate for different ports on NGINX, you can follow these steps:Generate or obtain an SSL certificate: You can either generate a self-signed certificate or obtain a certificate from a trusted Certificate Authority (CA). Make sure the certificate includes the common name (CN) or Subject Alternative Name (SAN) for each port you want to use. Configure NGINX server blocks: In the NGINX configuration file, define separate server blocks for each port you want to secure with SSL.
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9 min readTo implement fail2ban inside a Docker container running nginx, you can follow these steps:Start by creating a new Docker container with both fail2ban and nginx installed. You can use an appropriate base image that includes both packages. Configure fail2ban to monitor the nginx logs for specific events. Open the fail2ban configuration file (usually located at /etc/fail2ban/jail.conf or /etc/fail2ban/jail.d/nginx.conf) and define the jails for nginx.
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6 min readTo reload Nginx in Windows, you can follow these steps:Open the command prompt by pressing the Windows key + R and typing "cmd". Press Enter to open the command prompt window. Navigate to the Nginx installation directory by using the "cd" command. For example, if Nginx is installed in the "C:\nginx" directory, type: cd C:\nginx To reload Nginx, type the following command and press Enter: nginx -s reload Wait for a moment for Nginx to reload.
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7 min readTo perform a reverse DNS lookup in Nginx, you can use the ngx_http_geoip_module module along with the MaxMind's GeoIP database. Here's how you can do it:Install GeoIP module: First, you need to install the GeoIP module by reloading or rebuilding Nginx with the --with-http_geoip_module option. Make sure you have the necessary dependencies installed. Download GeoIP database: Next, download the appropriate GeoIP database from MaxMind's website (usually in binary format).
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9 min readWhen using Nginx, redirecting is a common task. To redirect URLs, you can manipulate the server blocks in the Nginx configuration file. Here are some tips on how to correctly redirect with Nginx:Permanent Redirects (301): To implement a permanent redirect, use the return 301 directive. For example, to redirect http://example.com to https://example.com, use the following configuration: server { listen 80; server_name example.com; return 301 https://example.