The code path each thread in a currently existing process traversed to put it in its current state.
Ping sweep with nmap
Need to find a free IP in your address range? Use NMAP to find out which addresses are currently used:
nmap -sP 172.24.17.1-255
The difference between Red Hat ES and AS versions
Per Red Hat: “ES is licensed for x86 compatible servers with up to 2 CPUs and 8GB of main memory; AS is licensed for servers of any size and any architecture.”
ntpdate equivalent command when running NTP service
If your Linux clock is more than a minute or two off, you might be tempted to use the “ntpdate” program to update the clock one time. However, the ntpdate program cannot run while the ntp daemon is running (not to mention the fact the ntpdate function is set to be retired).
You can mimic the functionality of the ntpdate command by issuing the “ntpd -q -g” command. This updates the clock, telling the ntp daemon to ignore the ‘sanity limit’ of 1000 seconds, and exit after updating the clock.
Where is LVM metadata stored?
You can a backup of your current metadata configuration in /etc/lvm/backup.
Determine Oracle Application Server version
Open the $ORACLE_HOMEconfigias.properties file. Then find the [InstallData] section and the “Version” attribute, which looks like this:
Oracle version numbers explained
The significance of the version numbers are (lets use 220.127.116.11.2 as an example):
9 is the version number
0 is the new features release number
1 is the maintenance release number
1 is the generic patch set number
2 is the platform-specific patch set number
I found this excellent listing of Cache-Control definitions on askapache.com:
This object may not be stored in any cache, even the requestors browser cache.
This object may be held in any cache but it must be revalidated every time it is requested.
This object can be stored in the requesting browser´s cache but not in a shared cache
Tells caches that they must obey any freshness information you give them about an object. The HTTP allows caches to take liberties with the freshness of objects; by specifying this header, youre telling the cache that you want it to strictly follow your rules.
Similar to must-revalidate, except that it only applies to proxy caches.
Need a 32-bit package on a 64-bit install?
Steve tells you how to do it here: http://www.phase2.net/?p=51
(For the lazy: Put libgcc.i386 into the %packages section of your kickstart file to install the 32-bit libgcc library)