If you've been given a public ssh host key and want to verify it before adding it permanently to your ssh known_hosts file:

Get the public ssh key:

Get the ssh key fingerprint:

Some collected tips and tricks for sendmail and related mail utilities. For more documentation, see the cf/README, sendmail/SECURITY, and doc/op/op.ps files under the sendmail source...

To receive local root email to an externally monitored email address:

• Login to plesk control panel and set the admin contact email address for the server which should update "/var/qmail/alias/.qmail-root" file and add an alias for root.
  
• Either add the hostname (FQDN) to the qmail control locals file or to the virtualdomains file located in "/var/qmail/control/".
  
• Also add the hostname (FQDN) to the "/var/qmail/control/rcpthosts" file if not already present so local mails get delivered.
  
• Restart inetd and qmail:
  
  /etc/init.d/inetd restart
/etc/init.d/qmail restart

• Check with:
  
  /var/qmail/bin/qmail-showctl

  This should show:
  

  ...
locals:
...
Messages for host.domain.tl are delivered locally.
...
rcpthosts:
...
SMTP clients may send messages to recipients at host.domain.tld.
...

Nice set of plesk qmail tips!

HDD Temperature

You can usually identify which hard disks are on your system by looking in "/proc/ide" and in "/proc/scsi".

`fdisk -l` lists the two drives as "sda" and "sdb".

With the upgrade to drupal-5.14 and using the SecurePages 5.x-1.7-beta1 module:

Error:

Solution:
Added the below code to the beginning of the securepages_init function in "securepages.module" so function gets loaded.

  if (!function_exists('drupal_urlencode')) {
    include_once 'includes/common.inc';
  }

Reference:
http://drupal.org/node/330171

Hands on with an Exim Cheatsheet!

A DHCP Server assigns IP addresses to client computers. This is very often used in enterprise networks to reduce configuration efforts. All IP addresses of all computers are stored in a database that resides on a server machine.A DHCP server can provide configuration settings using two methods

Default to highlighting search string when using grep by adding the below alias to ~/.bashrc file:

Presto is a project that aims to utilize the work done on deltarpm to provide faster, smaller size downloads to Fedora users. Not only will using yum-presto save lots of bandwidth, but it will cut down on the time it takes to perform updates...