====== Useful Linux Commands ======
  * Disk: df -h (freier/belegter Platz)
  * Display resolution: xrandr -s <width in px>x<height in px> (may require restart of window manager, e.g. fvwm)
  * HTTP Proxy:  %%export http_proxy=http://<host>:<port>%%
  * Keyboard layout: dpgk-reconfigure console-data (Konsole), setxkbmap -layout de -variant nodeadkeys (X), edit /etc/X11/xorg.conf (X)
  * Locale: Set locale as non root user: edit ~/.bashrc. Add e.g. the following line: export LANG=de_DE.UTF-8 (German, UTF-8)
  * Package: dpkg -L <package name> (Lists all installed files of a deb package)
  * Users: List all currently logged in users: "users" or "who"
  * Zeit und Datum stellen, zum Beispiel: date -s "1 SEP 2010 18:00:00"
  
  


====== Useful vim Commands ======
  * "?<string>": Search backward
  * "/<string>": Search forward
  * "n": Find next of Search (backward/forward)

  * ":%s/<find>/<replace>/g": Globally replace <find> by <replace>

  * "u": Undo

  * "v": Enter visual mode (character)
  * "V": Enter visual mode (line)
  * Change encoding: ":set encoding=<encoding_name>", z.B. ":set encoding=latin1", ":set encoding=utf-8"

====== Useful top shortcuts ======
  * "1": Toggle CPU display (single entry for each core/cpu) 
  * "k": Select process to kill (signal 9 can not be caught by the application)

====== APT ======
  * Package conflickts: apt-get -f install and apt-get autoremove 

====== RPM ======
Get information about a rpm package file: rpm -p <name>.rpm -q -filesbypkg  --scripts


====== Useful xterm shortcuts ======

====== Bashing ======

====== Oracle ======
===== SqlPlus =====
  * Anmelden: connect sys/pw as sysdba
  * Hochfahren: startup 

===== Oracle configuration parameters =====
===== SQL =====
   * Insert Timestamp value: insert into table(timestamp_column) values(to_date('2010-07-08 14:30:56', 'YYYY-MM-DD HH24:MI:SS'));
   * Alle aktiven Sessions anzeigen: SELECT SID, Serial#, UserName, Status, SchemaName, Logon_Time FROM V$Session WHERE Status='ACTIVE' AND UserName IS NOT NULL;
   * Alle Sessions anzeigen, die andere blockieren: select blocking_session, sid, serial#,  wait_class, seconds_in_wait from v$session where blocking_session is not NULL order by blocking_session;