Flush a queue of e-mails

For various reasons it's possible that some e-mails are queued (for instance because of issue into an element of a full and safe emails server - e.g. too old packages, broken anti-virus, broken anti-spam ...).

After having fixed the issue, it's interesting to flush all queued e-mails, which can easily be done with the following command:
postqueue -f

Stop updating packages as often

When managing computer administration, there is a big trap to avoid: update the packages as soon as they are available.

Stop polling for incoming e-mails

Unfortunately, it seems there are lots of us (computer users) polling for incoming e-mails very, very often; like if a very important thing might be received and to be answered almost immediately.

Help ! rpm or yum freezes

Sometimes, rpm, yum or even other commands are freezing without message to understand why (e.g. for yum, just after the message "Running Transaction Test").

Compile LZO, TUN and OpenVPN under Solaris 64bits (revised)

(This post is a revision of this one for Solaris 64bits, and in accordance with new source code versions).