If you want to list all installed Perl modules - e.g. to make sure all requirements of a Perl application are provided - pmall might help you a lot. On Red Hat Enteprise Linux/CentOS systems the tool is part of the perl-pmtools package and creates an output like below:

1# yum install -y perl-pmtools
2# pmall
3Newt ( …

If problems occur while starting the Open Source Architecture Daemons the issue can have multiple problem causes. This service is used amongst others in combination with Spacewalk, Red Hat Satellite, or SUSE Manager to push configuration jobs or software packages.

The following problem causes are possible:

• The …

When it is necessary to share files between multiple devices and persons OwnCloud is a good alternative for Dropbox.

The open-source software that also supports WebDAV can also be installed on a managed web server - for this purpose the project offers a installation script which is transfered to the server using FTP: …

To keep contacts and calendars up-to-date between multiple devices well-known cloud services like Apple iCloud or the Google services are often used.

It's no doubt that this is a very comfortable solution - but in my opinion you shouldn't place trust in public cloud services. I personally avoid cloud services and try …

While creating a VMFS storage I received the following error yesterday:

1Call "HostDatastoreSystem.QueryVmfsDatastoreCreateOptions" for object "ha-datastoresystem" on ESXi "xxx.xxx.xxx.xx" failed.

First I thought the freshly created logical drive on my HP RAID contorller had a failure - but this …

Use the following commands to completely disable IPv6 under RHEL / CentOS up to version 6:

1# echo "options ipv6 disable=1" > /etc/modprobe.d/ipv6.conf
2# chkconfig ip6tables off
3# shutdown -r now

A module parameter prohibits IPv6 functionality after the next reboot. If this value wasn't set, some services …