COSC 071 Frequently Asked Questions

The same questions seem to keep coming up, so I've decided to create a frequently asked questions (FAQ) list with the answers.

• How do I get an account on gusun?

  Answer: All Georgetown students can get an account on gusun. If you do not have one, simply go to Academic Computing Services (ACS) in 238 Reiss and request a gusun account.

• When using g++, why do I get the following error?

  gusun% g++ test.cc
  collect2: ld terminated with signal 10 [Bus Error], core dumped
  gusun%
  

  Answer: AITS typically gives you only 1MB of disk space, and you exceed that quota when g++ attempts to write your executable to the disk. Possible solutions include (1) removing large, unneeded files, (2) working with one executable at a time instead of attempting to work with multiple executables, which take up a lot of disk space, (3) begging AITS for more disk space, something you may consider if you plan to use Unix in this class, and (4) moving multiple executables to the /tmp directory, which is a directory where you can temporarily store large files. But beware because sysadmins will occasionally clean out these directories, and you could lose important files, meaning don't store your source code there.

• How do I ftp a file from a Windows machine to gusun?

  Answer: From Windows 95, run the ftp command. Here is a transcript of an ftp session:

  ftp> open gusun.georgetown.edu
  Connected to gusun.georgetown.edu.
  220 gusun FTP server (UNIX(r) System V Release 4.0) ready.
  Name (gusun:maloof): maloof
  331 Password required for maloof.
  Password:
  230 User maloof logged in.
  ftp> lcd c:\myprograms
  Local directory now c:\myprograms
  ftp> put test.cc
  200 PORT command successful.
  150 ASCII data connection for test.cc (141.161.50.155,59439) (142 bytes).
  226 ASCII Transfer complete.
  local: test.cc remote: test.cc
  153 bytes sent in 0.013 seconds (11.72 Kbytes/s)
  ftp> bye
  221 Goodbye.
  

• How do I ftp a file from gusun to a Windows machine?

  Answer: From Windows 95, run the ftp command. Here is a transcript of an ftp session:

  ftp> open gusun.georgetown.edu
  Connected to gusun.georgetown.edu.
  220 gusun FTP server (UNIX(r) System V Release 4.0) ready.
  Name (gusun:maloof): maloof
  331 Password required for maloof.
  Password:
  230 User maloof logged in.
  ftp> lcd a:\
  Local directory now a:\
  ftp> cd cosc071/projects
  Directory now /export/home/maloof/cosc071/projects
  ftp> get proj4.cc
  200 PORT command successful.
  150 ASCII data connection for proj4.cc (141.161.50.155,59439) (142 bytes).
  226 ASCII Transfer complete.
  local: proj4.cc remote: proj4.cc
  153 bytes sent in 0.013 seconds (11.72 Kbytes/s)
  ftp> bye
  221 Goodbye.