A. Garfagnini >> UNIX tips

Connecting to a CVS server through ssh

1. On the client machine create a ssh configuration file in $HOME/.ssh/config
   Host mycvs
HostKeyAlias zenag.desy.de
Hostname localhost
Port 8822

2. Create a forwarding of all local connections to port 8822 to cvsserver.domain.net with the command:
   ssh -v -l alberto -L 8822:zenag.desy.de:22 zenith206.desy.de
3. Set the environment variables:
   export CVSROOT=cvsserver2:/var/lib/cvs/
export CVS_RSH=ssh

4. And now execute the cvs commands, for instance:
   cvs -d alberto@cvsserver2:/var/lib/cvs update

Text formatting and printing

• a2ps How to print two files one after the other:
  a2ps --file-align=fill -o output.ps file1.txt file2.txt
• How to format a postscript file for book printing:
  1. psbook infile.ps > out1.ps
  2. pstops "4:0L@0.7(21cm,0)+1L@0.7(21cm,14.85cm),2R@0.7(0,29.75cm)+3R@0.7(0,14.85cm)" infile.ps > outfile.ps

Writing a DVD+RW on Linux

1. Formattare il DVD+RW nel caso sia vergine.
   # cd /opt/src/dvd+rw-tools-5.21.4.10.8
# ./dvd+rw-format /dev/hdc
2. Creare una immagine ISO.
   
   1. Aggiungere nel PATH il link a mkisofs di Schilling
      # export PATH=/opt/schily/bin/:$PATH
   2. Creare immagine con mkisofs
      # /opt/schily/bin/mkisofs -graft-points -f -R -r -l -J -o image.iso schily/=/opt/schily/
   3. Regole da seguire per i path names:
      • Per le directory: slash at both ends.
        nome_directory/=/path/completo/alla/directory/con/slash/finale/
      • Per i files: no slash at the end.
        nome_file=/path/to/file/senza/slash/finale
3. Passare l'immagine creata a growisofs che la masterizza:
   # ./growisofs -dvd-compat -Z /dev/hdc=image.iso
4. Nel caso si volesse fare un test di prova senza scrivere:
   # ./growisofs -dry-run -dvd-compat -Z /dev/hdc=image.iso