If found that this issue is related to resolv.conf of the host machine. It points to a dnsmasq of localhost instead of the DNS servers provided by the network connection(s). To disable this dnsmasq "feature", edit /etc/NetworkManager/NetworkManager.conf and add a hash sign # right in front of dns=dnsmasq. Then restart the NetworkManager with service network-manager restart. Finally, stop all virtual machines and boot them.
After upgrading from 12.04 to 14.04 I found that Nautilus shows the modification times of each file in lists only like "22. Jan 2014" instead of "22.01.2014 10:53:18". Some research showed that the issue is known and currently only "solveable" by either recompiling or taking a precompiled PPA. That means, it either breaks after each Nautilus update or is insecure.
I found a more generic and update-safer way to work around the issue by adding a custom column. It is far from being perfect, because sorting only works if the date format is something like YYYY-MM-DD HH:mm:ss. When using another date format like the German one DD.MM.YYYY HH:mm:ss, the lexicographic order is not particularly useful. Furthermore, it does not work on network shares yet.
In order to be able to use Python to add a Nautilus file list column, install the following package:
sudo apt-get install python-nautilus
Create the following subfolders, if they do not already exist: ~/.local/share/nautilus-python/extensions
Create a file longdate.py in the directory and add the following code:
#!/usr/bin/env python
import os
import urllib
import datetime
from gi.repository import Nautilus, GObject
class ColumnExtension(GObject.GObject, Nautilus.ColumnProvider, Nautilus.InfoProvider):
def __init__(self):
pass
def get_columns(self):
return (Nautilus.Column(name="NautilusPython::Longdate", attribute="longdate", label="Longdate", description="Get long date"),)
def update_file_info(self, file):
if file.get_uri_scheme() != 'file':
return
filename = urllib.unquote(file.get_uri()[7:])
statbuf = os.stat(filename)
formatteddate = datetime.datetime.fromtimestamp(statbuf.st_mtime).strftime('%Y-%m-%d %H:%M:%S')
file.add_string_attribute('longdate', str(formatteddate))
After saving, enter nautilus -q in the terminal in order close the program entirely. Make the program file executable. Then restart Nautilus by clicking the file symbol. In the bar above the file list left-click and choose "Longdate" to show the detailed modification date and time of each file.
Füge folgende Validierer hinzu:
jQuery.validator.addMethod(
"germanDate",
function(value, element) {
return value.match(/^\d\d\.\d\d\.\d\d\d\d$/);
},
"Bitte geben Sie das Datum im Format TT.MM.JJJJ an."
);
jQuery.validator.addMethod(
"birthDate",
function(value, element) {
var parts = value.match(/(\d+)/g); // assumed format: dd.mm.yyyy
var d = Date.parse(parts[2], parts[1], parts[0]);
var dMin = Date.now() - 3153600000000; // minus 100 years
var dMax = Date.now() - 567648000000; // minus 18 years
if (d < dMax && d > dMin) {
return true;
}
return false;
},
"Bitte geben Sie ein Geburtsdatum zwischen " + (new Date().getFullYear() - 99) + " und " + (new Date().getFullYear() - 18) + " ein."
);
Diese kann man dann in den Rules wie die vordefinierten Validierer verwenden:
"tx_abx[geburtsdatum]": {
required: true,
germanDate: true,
birthDate: true
},
My daily WTF: The following script reproducibly makes my desktop Ubuntu stop. The script deploys files to a cluster of 20 machines. In order not to wait for 20 subsequent rsync executions, I sent each one to the background. Bad idea...
while read p; do
rsync from-path $p:to-path &
done < slaves
Ich hatte für den Faxversand und Push Service der FritzBox bisher das T-Online-E-Mailkonto eingetragen als Absender. Diese Einstellungen funktionierten allerdings plötzlich nicht mehr. In der FritzBox konnte man unter "System" > "Push Service" > (Haken bei "Test E-Mail") "Übernehmen" sehen, dass keine E-Mail versendet werden kann.
Es haben sich anscheinend zwei Dinge verändert: Man kann E-Mails nur noch verschlüsselt verschicken, wozu eine Änderung des SMTP-Servers und des Ports nötig ist. Zudem wird dann zwingend ein Passwort benötigt, welches nicht einem bereits existierenden Standard-T-Onlinepasswort entspricht (trotzdem man sich mit diesem wiederum im Webmailer einloggen kann... 
).
Kochrezept:
1. Separates neues E-Mailpasswort anlegen unter https://kundencenter.telekom.de/kundencenter/kundendaten/passwoerter/email-passwort-einrichten.html.
2. In der Fritzbox unter "System" > "Push Service" folgendes eintragen:
- E-Mailadresse: eigene adresse @t-online.de
- Kennwort: Das soeben neu vergebene Passwort
- Unter "Kontodaten - weitere Einstellungen":
- E-Mail-Benutzername: eigene adresse @t-online.de
- SMTP-Server: securesmtp.t-online.de
- Port: 465
- Haken machen bei "Dieser Server unterstützt eine sichere Verbindung