Archive for category SuSE

How to update Linux time zones

time zone map
On May 1st, Venezuela will change its time zone to UTC-4, therefore in Linux you must update your tzdata package to be ready to this change. To do so just just follow these steps:

Debian/Ubuntu

aptitude update
aptitude safe-upgrade tzdata

Red Hat

yum check-update
yum update tzdata

In order to check whether the update has the time zone changes you can run this command:

zdump -v /usr/share/zoneinfo/right/America/Caracas  | grep 2016

/usr/share/zoneinfo/right/America/Caracas  Sun May  1 06:59:59 2016 UT = Sun May  1 02:29:59 2016 VET isdst=0 gmtoff=-16200
/usr/share/zoneinfo/right/America/Caracas  Sun May  1 07:00:00 2016 UT = Sun May  1 03:00:00 2016 VET isdst=0 gmtoff=-14400

Reference: How to check if the Time Zone database


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VirtualBox Guest Addtions on OpenSuse 10.1

OpenSuse logo

A coworker came to me with a virtual machine running OpenSuse 10.1, where she wanted to use one of the VirtuaBox’s Guest Additions features: shared folders. The first thing I detected was it didn’t have the Guest Additions installed, so I proceeded to install them but the VirtualBox’s installing script didn’t compile because all the stuff needed to compile a Linux module was missing. On this article I describe all I had to do to compile the Guest Additions on OpenSUse 10.1.

OpenSuse 10.1 repositories

First I supposed I had to install the kernel sources and the needed compilers, but checking the repositories I realized that it only had as source the installation CD that was used to create the virtual machine.  OpenSuse 10.1 is an old distribution and its repositories are no longer supported officially, so I had to find somebody who had the mirrors published, so I came across to this mirror list. I used the first option and from Software Sources I put the url shown on the picture:

OpenSuse 10.1 - repo

Requisites to compile the Guest Additions

Once the repository was added I proceeded to install the requisites to compile the Guest Additions, begging with the C/C++ tools and compilers. To do so, I went to the OpenSuse’s Control Center, and from Software Management I choose C/C++ compilers and tools option from the selections, as shown in the following image:

C and C++ Compilers and tools

In order to compile the Guest Additions it still left another requisite: the kernel sources. Here I found another problem, because the virtual machine had kernel 2.6.16.46-0.12-default but the repository didn’t have the sources for that version but the 2.6.16.13-4-default version instead. The solution was to remove the kernel image 2.6.16.46-0.12 and use the one provided in the repository 2.6.16.13-4, to do so yo can use the Software Management or from a terminal type this:

 zypper remove kernel-default
 zypper install kernel-default

Then you can install the kernel sources:

 zypper install kernel-source kernel-sysm

Once installed all requisites, just run the Guest Additions script from the directory it was mounted:

./VBoxLinuxAdditions.run

To changes take effect you must reboot the guest.

Shared folders

You can active the shared folders from VirtualBox’s by going to Device > Shared Folders, and select the one you want to map in the host’s file system. If you check Auto-mount next boot, and for the shown example, a shared folders will appear in /media/Sf_videos

Shared folders

References

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