{"id":6856,"date":"2016-04-15T09:00:19","date_gmt":"2016-04-15T13:00:19","guid":{"rendered":"https:\/\/blogs.mathworks.com\/pick\/?p=6856"},"modified":"2016-04-14T02:42:53","modified_gmt":"2016-04-14T06:42:53","slug":"secure-ftp-sshsftpscp","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/pick\/2016\/04\/15\/secure-ftp-sshsftpscp\/","title":{"rendered":"Secure FTP (SSH\/SFTP\/SCP)"},"content":{"rendered":"\r\n\r\n

Jiro<\/a>'s pick this week is \"SSH\/SFTP\/SCP For Matlab (v2)\"<\/a> by David Freedman<\/a>.<\/p>

Recently, we changed our internal server for our blogs, and now we are using Secure FTP<\/a> to upload images and files. When we were using the old system (FTP), many of us used MATLAB's ftp<\/tt><\/a> or Passive Mode FTP<\/a> (Picked<\/a> by Sean<\/a>) to automate the file transfer.<\/p>

With the new system, I needed an SFTP-equivalence to the ftp<\/tt> function. Of course, I looked to the File Exchange! David's entry is a well-written package that interfaces to an open-source Ganymed SSH-2 Java library. The entry comes with a version of the library, but it can also be set up to download a version from the web. The setup is very simple and seamless. What I also like about this entry is that David provides simple interface commands to SSH\/SCP\/SFT, as well as advanced interface functions.<\/p>

The simple interface works like this:<\/p>

scp_simple_put('sftp.thishost.com'<\/span>,'username'<\/span>,'password'<\/span>,...<\/span>\r\n    {'file1.m'<\/span>,'file2.txt'<\/span>},'\/var\/host\/user\/'<\/span>,pwd)\r\n<\/pre>
With a single command, you specify the server, the files, and the location you want to upload to.<\/p>
If you want more control, the advanced interface works like this:<\/p>
% Create a connection<\/span>\r\ns_conn = ssh2_config('sftp.thishost.com'<\/span>,'username'<\/span>,'password'<\/span>);\r\n\r\n% Run a command, such as \"create a folder\"<\/span>\r\nssh2_command(s_conn,'mkdir \/var\/host\/user\/temp'<\/span>);\r\n\r\n% Copy files from local to remote<\/span>\r\nscp_put(s_conn,{'file1.m'<\/span>,'file2.txt'<\/span>},'\/var\/host\/user\/temp'<\/span>,pwd);\r\n\r\n% Close the connection<\/span>\r\nssh2_close(s_conn);\r\n<\/pre>
David has documented the functions well and also has included examples for you to try. Thanks, David, for making this transition from FTP to SFTP so simple!<\/p>
Comments<\/b><\/p>
Give this a try, and let us know what you think here<\/a> or leave a comment<\/a> for David.<\/p>