Computing information

• Open Softwares
• Other Softwares
• Tricks
  • Synchronizing through USB Key
  • Merging PDF files
  • Finding a Unix file
  • Accessing private ressources of CMLS
  • Commands on terminal launch

Tricks

• Synchronizing through a Memory Key two *!&#-operated systems

  1. When files are synchronized, removed the archive attribute by typing in a command window:
  attrib -a * /s
  2. To copy to the directory ARCHIVE all files that have been modified since step 1 (and therefore have the archive attribute):
  xcopy . ARCHIVE /a /s
  

• Merging PDF files with Linux

  To merge file1.pdf,...,fileN.pdf use the command:
  
  pdftk file1.pdf file2.pdf ... fileN.pdf output file.pdf
  
  (use pdftk --help for more information).

• Finding a file with Unix

  find ~ -path '*name*'
  
  

• Using the CMLS server as a proxy:

  This goes into two steps: openning a secure "tunnel" and telling your browser to use it:

  Openning the tunnel

  A. Under UNIX or UNIX-like (e.g., MacOS-X's Darwin) systems:
  1. Execute the shell command: ssh -N -f -L8080:cache.math.polytechnique.fr:8080 login@math.polytechnique.fr sleep 60
  2. You will be asked for your login and password.
  
  Remark:The above procedure can be used under Windows if you have installed CYGWIN provided you selected the openssh package during installation. Then just open a Cygwin shell before executing the above steps.
  
  B. Under WINDOWS using PUTTY:
  1. Launch putty.exe;
  2. In the "Session" screen (see the bar on the left hand side of the Putty window) select your host, for instance "Host name" = math.polytechnique.fr, "Port " = 22.
  3. In the "Tunnels" screen, set "Source port" = 8080 and "Destination" = cache.math.polytechnique.fr:8080. Then click "Add";
  4. Click "Open". You will be asked for your login and password.

  Having Mozilla use the tunnel

  1. launch Mozilla
  2. open Edit/Preferences/Advanced/Proxies;
  3. Note the settings for future restauration;
  4. select "Manual Proxy Configuration"
  5. enter "localhost" as "HTTP Proxy" and "8080" as "Port".
  6. Close preferences.
  
  You're set!

• Commands to be executed at each launch of a terminal window

  Put these commands into ~/.bashrc_private