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Private by Default with umask

easy 10 XP ~4 minHands-on lab

zara handles payroll exports. Files they create are readable by every account on the server, because their shell uses the default file-creation mask.

Task

  • In every login shell of zara, new files must be created with mode 640 and new directories with mode 750.
  • The setting must survive logging out and in again.
  • Do not change the defaults of any other account (for example student).

About this machine

Ubuntu 24.04 with no internet access. You are student with passwordless sudo. The grader checks the final state of the machine, not the commands you typed. Values like names and ports are generated for you.

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