Let's make a quick start by looking at the various commands to get files and folders from a remote server. 
Method 1:
wget -m -nH --user='username' --password='user_password' ftp: //IP address/
Method 2:
1. ftp
2. open ftp: //ftp.domain_name.com
3. enter username and password
4. ls -la
5. get filename or mget * ( Note: This works only with files and not folders)
Method 3:
wget --user=username --password='user_password' ftp: //url/path/file.name
Method 4:
wget -r --user=username --password='user_password' ftp: //ftp.domain_name.com/*
