Setting up X terminal (Xming) to CentOS 5 or CentOS 6 server

Step 1) Add line 1 line in the /etc/gdm/custom.conf file.

You must enable XDCMP in the /etc/gdm/custom.conf file add the following lines:

Enable = true

Step 2) Comment out the "no-listen=tcp" line within the /etc/X11/fs/config file.


Step 3) Restart the xfs service using the command /etc/init.d/xfs restart

Step 4) start "gdm"

Step 5) When prompted by X to allow addition X servers answer "yes"

Step 6) Configure Xming with XDCMP to IP address single window

Step 7) Check Clipboard

Udev and your Ethernet Interface names in a Virtual World

Udev and your Ethernet Interface names in a Virtual World


Have you ever cloned a VM (Virtual Machine) of either Redhat or CentOS and had your Ethernet Interface Name change on you to something other than "eth0" or "eth1" ...


If so even though you change /etc/sysconfig/network-scripts/ifcfg-ethXXXX and its entries to reflect your choice of name, after a reboot you still find your ethernet interface

libtoolT errors in autoconf(./configure) in tomcat connector source compile on CentOS 6 64bit

Normal run of libtool, produces no other warnings until the end of the 
master configure script.
At which point out pops:
  config.status: executing libtool commands
  /bin/rm: cannot remove `libtoolT': No such file or directory

This is resolved by placing:
  $RM -f "$cfgfile"

at line 680 of /usr/share/aclocal/libtool.m4


NOTE: If you already started your ./configure (autoconf) run you will need to locate the localized libtool.m4 commands in configure.status

SNPP - Simple Network Paging Protocol Resources

SMTP Gateways -

Please Note: While this protocol is popular, it was not designed for messaging and as such it is not time sensitive, there can be delays in the reciept of the email depending on the routing (this does not have anything to do with the software but the design of the protocol). If your carrier supports SNPP or WCTP we would suggest using those protocols if time is an issue!

How to Convert MB/s to IOPS

Most SSDs have two speed ratings for reading as well as for writing.  The first rating is the sustained MB/s performance, which is the main marketing most manufacturers use.  The second rating is the 4K Random IOPS performance, which gives a much better idea of how the drive will perform in the real world.  The sustained MB/s rating is the sequential transfer rate the SSD will maintain continuously, such as over a period of 30 seconds.  The 4K Random IOPS on the other hand is how many 4K (4096 byte) operations the drive will handle per second with each block being read or written to a rando

Linux Multipath Routing

I have 2 internet connections, I can configure eather one to work fine on this syetm, each comes in on a different ethernet card.

Reference Material "Linux advanced routing and traffic control HOWTO" can be found here:

So that now I am configured so that both networks are up at once, each one responds to ping properly.

I can then set eather networks gateway as my default gateway and have internet access.


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