# POSIX

- ## POSIX installation improvements:

  - POSIX files have the correct file permissions
  - more Unix utilities in their expected directory
  - /etc/profile enhancements:
    - “.bak” version kept
    - “/etc/profile.local executed at end
    - able to define shell vars from the CI
  - the SH UDC in hppxudc.pub.sys is more intuitive
    - CWD no longer changed
    - e.g. sh -c makefile

- ## Extended characters in POSIX filenames

  - ~ ` $ % ^ * + { } | :

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