By using change command we can force a user to change password on first login or next login.
chage -d 0
Here I am using trying to change ‘tom’ users password on next/first login.
$ change -d 0 tom
-d 0: By setting it to zero, we are going to force user to change password on next/first login.
Join this online forum to hear from analysts and experts on how companies are beginning to transform with DBaaS, and learn the prescriptive steps your organization can take to design, deploy, and deliver DBaaS today.
Monday, October 21, 2013
9 a.m.–12 p.m PT / 12 p.m.–3 p.m. ET
This Blog entry is an extension of the Compiling and installing FFTW 3.3.3
To Compile FFTW 3.3.3 single precision with OpenMPI, make sure you compile and set your path for Intel and OpenMPI. You may want to get more information from Compiling OpenMPI 1.6.5 with Intel 12.1.5 on CentOS 6
Ksplice is designed to work in many different computing environments. Because upgrading the kernel on any running system is a hassle, we want you to be able to deploy Ksplice as widely as possible. As a consequence of this, there are a number of ways to set up a Ksplice installation for your Oracle Linux infrastructure.
Taken from Open Tool for Parameter Optimization (otpo) Documentation
OTPO (Open Tool for Parameter Optimizations) is an Open MPI specific tool that is meant to explore the MCA parameter space. In Open MPI, the user can specify at runtime many values for MCA parameters, try e.g. (ompi_info –param all all). Alternatively, to focus on a single aspect of parameters, e.g. the parameters of the OpenIB BTL (ompi_info –param btl openib).
screen is a powerful terminal session manager with many use cases. One such use case is to start a long-running Command Line Interface (CLI) program in a terminal session, detach the session while leaving the program running unattended, logout, and return to the same session later from another terminal. Let's examine how you would use screen in a real-life situation. Imagine the time is 15 minutes to the end of your work day. But before you can leave, you have to run a program that will run for an hour.
Rsyslog is heavily threaded to fully utilize modern multi-core processors. However, the imudp module did so far work on a single thread. We always considered this appropriate and no problem, because the module basically pulls data off the OS receive buffers and injects them into rsyslog's internal queues. However, some folks expressed the desire to have multiple receiver threads and there were also some reports that imudp ran close to 100% cpu in some installations.