CPSC 489/589-010 DevOps Spring 2024

Week 5 Class 9 Tue Feb 13 Posted: Feb 13

After Class

• passwd The chfn now works.

Announcements

• Exercise 17: Entropy

  This exercise is optional for CPSC 489 students, but required for CPSC 589 students.

  Write a 1 page PDF that explains the relationship between the number of words in a Diceware password, the number of bits of entropy, and the estimated time it would take to break the password. For the estimated times, provide a reference or the calculation used.

  End the paper with an argument for what length of Diceware password to use.

  Upload the paper to Brightspace. This is due by 11:59:59 on Thu Feb 15.

• Build Configurations

Agenda

• Exercise 21: passwd

  1. Shell into the devops server using your account
  2. Generate a password using mkpasswd
  3. Change your password using passwd
  4. Change your local (gecos) information using the command chfn
  5. Log out
• Notes: More SSH

• Exercise 22: rmcomment

  Create an asciinema screencast of applying the command rmcomment to some source code.

  Do not log into the devops server, but use the ssh command as part of a pipe.

• Exercise 23: DevOpsComplexity CMake III

  Follow along and duplicate my changes to the CMake for the DevOps Complexity program.

  DevOpsComplexityCMake

All exercises are due by 4:30 pm on Wed Feb 14