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How to Configure Firewalld in Redhat, CentOS Linux

firewalld is a dynamic firewall manager for Linux. Here is how to configure firewalld in Redhat, CentOS Linux.

Sometimes you may need to reboot or restart Linux server from command line. Here is how to restart Linux server command line.

Sometimes you may need to flush DNS cache on your system. Here is how to flush DNS cache in Windows, Linux & Mac.

Sometimes you may need to change hostname of your machine on network. Here is how to change host name in Debian/Ubuntu Linux.

Sometimes you may need to send GET & POST requests in Python. Here is how to send HTTP requests using Python.

Swap file allows you to extend your server’s physical memory when it is full. Here is how to create swap file in Linux.

SFTP allows you to securely transfer files in Linux. Here is is an SFTP script to transfer files in Linux with password.

Sometimes you may need to reverse string in Python. Here are different ways to reverse string in Python.

Sometimes you may need to connect to PostgreSQL database and send SQL queries. Here is how to do it.

Sometimes you may need to remove snap or turn off snap in Linux. Here is how to remove snap in Ubuntu.