command line reference for windows cmd, powershell, macos and linux bash. also includes oracle and sql server database commands.

the linux documentation project is working towards developing free, high quality documentation for the linux operating system. the overall goal of the ldp is to collaborate in all of the issues of linux documentation.

linuxquestions.org offers a free linux forum where linux newbies can ask questions and linux experts can offer advice. topics include security, installation, networking and much more.

friendly linux forum

provides instruction guides, how-tos, troubleshooting tips and tricks on linux, database, hardware, security, web and open source for both newbies and geeks – thegeekstuff by ramesh natarajan

The Linux Portal Site

news and feature lists of linux and bsd distributions.

chatgpt resources and news. learn how artificial intelligence is changing the world, and use ai chat bots to discover what you can do with them.

Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.