File Transfer FAQ

1. How can I upload files to the FTP site?

   Anyone can anonymously upload data to a special location in the FTP site. This is the incoming directory.

   % ftp acs.pha.jhu.edu
   ftp> cd incoming
   ftp> mkdir cosmic_stuff
   ftp> cd cosmic_stuff
   ftp> put cosmic.fits
   ftp> bye
   

   These uploaded files will be available to anyone on an ACS workstation at /home/ftp/incoming/cosmic_stuff.

   Please note that all data in the incoming FTP areas will be removed after a short time (nominally five days).

2. Where should I put files so that anyone can download them by FTP?

   From one of our ACS workstations you can copy your data to your personal FTP directory at /home/ftp/pub/users/USERNAME, where USERNAME is your ACS user name. Be sure to make the files readable by anyone. For example:

   % cp collaborate.fits /home/ftp/pub/users/peacenik
   % chmod a+r /home/ftp/pub/users/peacenik/collaborate.fits
   

   This will make the files available to anyone at the location: ftp://acs.pha.jhu.edu/pub/users/USERNAME/.

   If you do not have a personal FTP directory simply let me know and I will create one for you.

   Please note that all data in the personal FTP areas will be removed after some time (nominally seven days).

3. What do I do when I see the sftp error message "Received message too long 796226418"?

   You will see this error message when sftp is corrupting an echo statement in your .login, .cshrc and/or .mycshrc files. If you find this line in your .cshrc:

   echo "${global_cshrc} not found"

   Please comment it out, per the following example:

   ####echo "${global_cshrc} not found"

   Alternatively, you may simply delete the line.

   Try to sftp again and you should be fine. For more information see the sftp FAQ. (http://www.snailbook.com/faq/sftp-corruption.auto.html)