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Operating Systems Course

Teacher: Stefano Scanzio
email: stefano.scanzio [ AT_SYMBOL ]


  • [2021/03/11]: Added solution of the 2021/02/12 exam
  • [2021/02/06]: Added solution of the 2021/01/29 exam
  • [2021/01/12]: Added video about theses (end of the page)
  • [2021/01/07]: Added video solution of the 2020/09/14 exam (20200914e_sol)
  • [2021/01/07]: Added solution of the tenth laboratory, text of the seventh laboratory.
  • [2020/12/14]: Added video solution of the 2020/06/16 exam (20200616e_sol)
  • [2020/12/14]: Tomorrow lesson, LESSON 27 2020/12/15, will start at 16:45
  • [2020/12/14]: Added solution of the ninth laboratory, text of the tenth laboratory.
  • [2020/12/04]: Published solution of the exercise proposed in classroom Semaphores Execution Order


  • u20: AWK (Outside the course topics) Not required at the exam


If you have not installed the Linux operating system in your PC, to run the virtual machines provided by Politecnico you need to follow this guide: labvdilinux-at-home-eng-v.4.4.1.pdf (Remember that you have to download and install into your PC the software Virt-viewer 9.0 )

  • Lab01: Management of files and directories, Permissions management, Link and comparisons between files, C programs and compilation
  • Lab02: Recursive visualization of a directory, Compilation and makefile, Recursive copy of a directory
  • Lab03: Analysis of concurrent programs, System call fork and shell commands related to processes, Precedence graph
  • Lab04: System call fork, exec, system
  • Lab05: Shell commands for processes and redirection, concurrency using fork() and wait(), use of signals
  • Lab06: Signals and pipe, Pipe and synchronization, Command find, Filters
  • Lab07: From recursion to concurrency, Concurrent file sorting, Concurrent file sorting and merging
  • Lab08: Bash scripts
  • Lab09: Access to critical sections, precedence graphs with semaphores
  • Lab10: Concurrent programs with semaphores
  • Lab11: Pseudo-exam test



Cheat sheet

Cheat sheet that can be used during the exam (PRINT them!)

Exam texts and solutions (before the "exam" platform)

Exam in Italian (before the "exam" platform)

In the following link you can find previous exams with solutions of the Italian version of the course:

Proposed Theses (Master Degree)

Thesis proposals can be downloaded here:
If interested, for informations, contact: stefano.scanzio [ AT_SYMBOL ] (tel. 011 090 5438) www:

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