Basic-Concepts
Web Servers
Uptime
Internet
Programming
Version Control
Configuration Management
Virtualization
Databases
Mail Servers
Domain Name Servers
Some useful links to explain the concepts of Editors
http://vim.rtorr.com/
https://danielmiessler.com/study/vim/
https://vim.swaroopch.com/
https://vimcolors.com
https://vimawesome.com/
https://github.com/rafi/awesome-vim-colorschemes
https://github.com/flazz/vim-colorschemes
https://dougblack.io/words/a-good-vimrc.html
http://www.yourownlinux.com/2015/04/sed-command-in-linux-delete-lines-from-file.html
http://unix.stackexchange.com/questions/26788/using-sed-to-convert-newlines-into-spaces
https://stackoverflow.com/questions/13610639/tr-command-how-to-replace-the-string-n-with-an-actual-newline-n
https://stackoverflow.com/questions/1251999/how-can-i-replace-a-newline-n-using-sed
https://stackoverflow.com/questions/19151954/how-to-use-variables-in-a-command-in-sed
http://www.theunixschool.com/2012/06/awk-10-examples-to-group-data-in-csv-or.html
https://stackoverflow.com/questions/15758814/turning-multiple-lines-into-one-line-with-comma-separated-perl-sed-awk
https://stackoverflow.com/questions/8714355/bash-turning-multi-line-string-into-single-comma-separated
http://linoxide.com/linux-command/awk-linux-famous-oneliners/
http://www.linuxnix.com/category/programming/awk/
https://www.markdownguide.org/basic-syntax
https://paperhive.org/help/markdown
https://stackedit.io/
https://dillinger.io/
https://typora.io
https://markable.in
https://hackmd.io
https://stackoverflow.com/questions/30006827/how-to-save-atom-editor-config-and-list-of-packages-installed
https://discuss.atom.io/t/how-to-backup-all-your-settings/15674