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Mac OS X Duplicate items in context menu

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Duplicates

After some time of work with my MacBook Pro a saw a strange behavior with the contextual menu “open with”.
Suddenly I had Evernote twice and fourfold and now seven times.

I tried to figure this strange behavior out and found that each copy comes after application update. For example after Opera update this contextual menu will appear one time more. So I think the behavior of a app update is like a new installation. There is a kind of check missing which should check the allready installed path. [Read more…]

Debian disable IPv6

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Since Debian 6 (squeeze) this is the working method to disable permanent IPv6 implementation. This method is also reboot safe.

cat /etc/sysctl.d/disable-ipv6.conf
net.ipv6.conf.all.disable_ipv6=1

If you have no possibility to restart your system yet, this change can be made immediately work by executing:

sysctl -p /etc/sysctl.d/disable-ipv6.conf

Anothe method – perfect for firewall scripts:

echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6

Fedora 18 rc.local

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After installing of new fedora 18 version at work, I was looking unsuccessfully for rc.local. TO modify some typical work routines.

From Fedora documentation

3.2.4. rc.local no longer packaged

    The /etc/rc.d/rc.local local customization script is no longer included by default. Administrators who need this functionality merely have to create this file, make it executable, and it will run on boot.
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touch /etc/rc.d/rc.local
chmod +x /etc/rc.d/rc.local

Set TimeZone in Fedora

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I forgot to set the correct time zone as I installed my new Fedora 18 system.
So this can be also done after the completed installation:

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ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime

The localtime symlink will show to the proper timezone file.