====== at ======
=== at job anlegen ===
  at now + 3 minutes
  echo test > /tmp/test
  Strg+d

  at 03:14 utc 19.01.2038
  echo 32 bit time_t overflow
  echo goodbye and thanks for all the fish
  shutdown -h now
  Strg+d
(( [[wpde>Jahr-2038-Problem]] ))
=== at über pipe ===
  echo 'rm -f /tmp/nutzer.lock' | at now + 5 hours

=== at jobs anzeigen ===
  atq
oder
  at -l
=== at job Details anzeigen ===
  at -c 1
=== at jobs löschen ===
  atrm 1
===== Dokumentation =====
  * man 1 at