1.) Firstly, lock the account to prevent the user from using the login until the change has been made:
# usermod -L
2.) Change the password expiration date to 0 to ensure the user changes the password during the next login:
# chage -d 0
3.) To unlock the account after the change do the following:
# usermod -U
With 1.4 billion people connected, the Internet is the greatest collaborative network that mankind has experienced. One of the consequences of the growth of this network is a shift in the way knowledge is being created and distributed. As we move to an interconnected world, the balance of power is shifting from old, proprietary models of knowledge creation to the open source model that emphasizes collaboration and sharing. From management gurus to consulting firms to leading business schools, everyone is taking note of this new phenomenon that goes by various names like ‘Collaborative Innovation,’ ‘Open Innovation,’ or ‘Distributed Co-creation.’
The open source movement has pioneered the Collaborative Innovation trend, and it is no surprise that the rapid growth of the Internet and the equally rapid growth of the open source community have mirrored each other. The Linux® operating system and Wikipedia website are both good examples of open source projects that embody the ideals of Collaborative Innovation. And those in the technology industry aren’t the only ones to take notice. Policy makers and corporate leaders in all markets are exploring how this powerful trend can be harnessed for social and economic development. » Read more
Answer:
The raw devices interface has been deprecated in Red Hat® Enterprise Linux® 5. The rawdevices service and /etc/sysconfig/rawdevices file no longer exist and raw devices are now configured via udev rules. However the preferred method for performing raw I/O (ie. bypassing filesystem caching) is to open EXT3/EXT2 files with the O_DIRECT flag.
This is an excerpt from the raw command’s man page:
Although Linux includes support for rawio, it is now a deprecated interface. If your application performs device access using this interface, Red Hat encourages you to modify your application to open the block device with the O_DIRECT flag. The rawio interface will exist for the life of Red Hat Enterprise Linux 5, but is a candidate for removal from future releases.
You’ve seen him here before, but it’s been a while since he popped in for a visit. You can enjoy his earlier work here, here, here or here. (Or check out his entire RHM collection). Who is that masked man? It’s the Fedora Project’s Greg DeKoenigsberg. And who better to talk about this history of the Fedora than someone who has been involved nearly every step of the way…
Devlabel is a script which manages symbolic links to storage devices on your system. This is accomplished by utilizing the inherent unique identifiers (UUID) that each device should have in order to maintain a correctly pointing symlink in the event that the device name changes (eg. /dev/sdc1 becomes /dev/sdd1).
» Read more
Question: How do I register my Red Hat Enterprise Linux Xen Guest system with the Red Hat Network?
Answer:
Important: For Red Hat Enterprise Linux 4 fully-virtualized guests install the latest version of up2date.
This procedure will work for both fully-virtualized and para-virtualized guests.
yum install rhn-virtualization-common rhn-virtualization-host
xm create xenguest
rhn_check
rhn-profile-sync
rhn_register
Now the Xen guest will show up as a registered, virtualized system. » Read more
Brian Stein and Perry Myers, part of the oVirt engineering team, continue their discussion and demonstration of oVirt. This time, they delve into the embedded hypervisor, showing how it can be quickly and statelessly accessed or a new node created. They also discuss virtualization technologies–KVM vs. Xen–and what direction oVirt will be taking, and why. » Read more
The Fedora Project holds a “Fedora Users and Developers Conference” (FUDCon) several times each year, in various locations around the world. The latest installment was September 5-7, in Brno, Czech Republic.
Max Spevack, Red Hat’s manager of Community Architecture, shared his trip report with us. » Read more
