RHEL8

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RHEL 8 has now been released.

Here are some aspects of it:

  • it uses the dnf command instead of yum with an identical syntax (yum is an alias for dnf),
  • the file system Btrfs, once in technical preview, is no longer available,
  • concerning the Python language used for most of the system scripts, the version 3.6 will replace Python 2.7 (more details here),
  • about LDAP, OpenLDAP is no longer available, you have to use the 389 LDAP server or something else,
  • you can’t remove NetworkManager from your configuration (it was already the case with the Gnome graphical environment in RHEL 7.5),
  • KDE is removed from the desktop (KDE is deprecated according to the RHEL 7.6 release notes),
  • a new mechanism called application stream is introduced (more details are available here, here and here).

Additional articles and videos about RHEL 8 are available here.

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RHCSA7: Task of the day

Allowed time: 10 minutes.
Archive and compress the content of the /opt directory (create files if none exists).
Uncompress and unarchive the resulting file in /root

RHCE7: Task of the day

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Set up time synchronization with default configuration.

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