Ubuntu versions 17.10 and up have vastly different file paths than previous versions, so you'll need to upgrade to the latest version of Ubuntu if you haven't already done so:  Open Terminal  Type in sudo apt-get upgrade and press ↵ Enter. Type in your password and press ↵ Enter. Type in y when prompted, then press ↵ Enter. Wait for the upgrades to finish installing, then restart your computer if prompted. Click the Applications menu ⋮⋮⋮, scroll down, and click the black-and-white Terminal icon to do so. You can also just press Alt+Ctrl+T to open Terminal. Type sudo apt-get install vsftpd into Terminal, then press ↵ Enter. Type in the password that you use to log into your computer, then press ↵ Enter. This will take anywhere from 5 minutes to 20 minutes depending on your current FTP settings and your Internet connection, so be patient. This is the program that you'll use to access and upload to your server. To install it:  Type in sudo apt-get install filezilla  Enter your password again if prompted. Wait for the installation to complete.
تأكد أن نظام أوبنتو محدّث. افتح نافذة الأوامر. أدخل أمر تثبيت تطبيق "في إس إف تي بي دي". أدخل كلمة مرورك. انتظر لحين تثبيت التطبيق. ثبّت تطبيق فايل زيلا.