===== Linux =====

=== Hostname ===
== Change hostname ==
Set hostname to desktop.nixcraft.com:

  # hostname desktop.nixcraft.com

== Change hostname permanently ==

You need to edit a file called /etc/hostname:

  # vi /etc/hostname

Set new hostname:

  desktop.nixcraft.com

==== Ubuntu ====
=== Mi hol van? ===

App indítók
  ~/.local/share/applications/

=== Alapértelmezett alkalmazások ===
  exo-preferred-applications
  ~/.config/mimeapps.list
  
=== fájl futtatása gnome handlerével ===
  gtk-launch valami

=== LTS vagy normál release-ekre frissítsen ===
  vi /etc/update-manager/release-upgrades

=== / remountolása, /dev, /sys, /proc felvétele chrootban ===
''mount /dev/sdaX -o remount,rw''

=== SATA rescan ===

  echo "- - -" | sudo tee -a /sys/class/scsi_host/host2/scan

=== The Linux keyboard and console HOWTO ===

http://tldp.org/HOWTO/pdf/Keyboard-and-Console-HOWTO.pdf

=== Sudoers file ===
<code bash>
  User_Alias	ALIAS = user1, user2, user3
  Host_Alias	
  Runas_Alias
  Cmnd_Alias
  
  user		host = (as-user) commands
  %csoport	host = (as-user) NOPASSWD: commands
</code>

== System info ==
  inxi -Fxzd