All About Tech
I have been using Fedora 12 (under HVM – Oracle VM 2.2) to build latest kernels from git (kernel.org), identify bugs, bisect, build and test. On Xen HVM Fedora 12 is quite slow (a full kernel build takes 3.5 hrs). I have noticed that initrd / mkinitrd does not have a future as Fedora 12…
I prefer to use the Adobe AIR applications and I use/used the following on Linux (Ubuntu 8.10 and OEL5):
April 22, 2009 was the Earth Day and over Twitter we have been sharing various ideas flowing around ways to celebrate the day.
Every instance of the command line shell (thus every process) on Unix (and hence Linux) has a different set of environment variables. Actually different shell instances you may have the same variable, but set to different values. If you are doing a system wide job and you are using shell scripting, you would like to…
Read More “How to Distinguish Environment Variables from Different Shells in “bash”?” »
On RHEL, OEL, CentOS and various other Linux distribution the Network Time Protocol (NTP) daemon can be run with various options.
See http://www.commandlinefu.com/commands/view/1566/recursively-grep-a-subdirectory-for-a-list-of-files (great site BTW)
Below are the tips I keep in mind with respect to crontab file format / configuration on Linux and Unix systems.
There are various filesystems on Linux, some being cluster aware, some being taking care of data integrity and so on. I have been using tools below to measure and compare performance of each: bonnie dbench postmark iozone Hope that helps…
If from the /var/log/messages you are receiving network / o2net related errors and some OCFS2 / system functionality is not available or not working properly, generating a ‘tcpdump’ over the network interconnect may help to diagnose the problem for root cause analysis (RCA).