blog.erben.sk Just another sysadmin blog

30Dec/110

Convert HD wtv file to play on Samsung TV

I have been searching log time for tool which can convert HD Windows Media Center recordings (wtv format) to some playable format for Samsung TVs, which are unable to play WTV recordings. I want to do it without re-encoding original wtv file. Finally I have found great tool remuxTool (v1.2.5). It's java application, it has gui or can be used in command line, which I prefer.

19Aug/110

Fighting againts SPAM – postfwd

Postfwd is Postfix firewall daemon.

20Jul/110

Install conntrack tools on Centos 5

Conntrack tools allows manipulating linux connection tracking table. Command conntrack is useful for deleting conntrack entries, but it is not included by default in RHEL/Centos.

Filed under: centos, linux Continue reading
7Apr/110

Dotdeb packages unattended upgrade

Unattended upgrades in Debian will not upgrade packages from third-party repositories (for example dotdeb.org) by default. It can be easily enabled editing /etc/apt/apt.conf.d/50unattended-upgrades.

Filed under: debian Continue reading
29Mar/110

Catching unsolicited bounces (backscatter) with SpamAssassin

From http://wiki.apache.org/spamassassin/VBounceRuleset

The “Virus Bounce Ruleset” is a SpamAssassin ruleset to catch “backscatter”.

Backscatter is mail you didn’t ask to receive, generated by legitimate, non-spam-sending systems in response to spam.

9Feb/110

Track Dovecot User Last Login Date and IP Address

Idea how to implement tracking last user pop3 or imap login date using dovecot is described in Dovecot Wiki.

23Jan/110

Server side mail filtering with dovecot and squirrelmail

Maybe you know, maybe not, but pre-build Debian Lenny packages of dovecot from backports has been built with sieve plugin.

14Jan/110

Restreaming from MPEG2 to Windows Media Player using VLC

Getstream is used to stream from dvb-t channels to multicast. One of mulicast stream is re-streamed to Windows Media using this script:

5Nov/100

Digmia Centos repository

Digmia Enterprise Linux Source is repository with many interesting and actual packages for Centos (RHEL). It contais for example mysql-5.0.84-2.el5.x86_64.rpm, php-5.2.10-2.el5.x86_64.rpm, zabbix-1.8.3-2.el5.x86_64.rpm, postgresql-8.2.14-1.el5.x86_64.rpm and many more.

Filed under: centos, linux No Comments
4Nov/100

Slow Drupal on NFS

Drupal includes many files. When DocumentRoot is hosted on NFS, include calls are slow, because too many lstat() calls which are slow on NFS.

Filed under: storage Continue reading