Linux is one of the more popular operating systems on the Web, mostly because it is so cheap to install and get up and running and writing cross-browser friendly HTML, Javascript, and CSS is a fundamental and critical part of developing web sites .Linux offer FTP access to your files, but only Linux will generally offer telnet or ssh access. (It’s possible to set up telnet access on Windows, but very few hosting administrators offer it.) FTP is a way of transferring your files from your hard drive to your Web server. Telnet and SSH are a way to open a window directly on the Web server and manipulate files right there, usually using Unix command line commands.