December 2004

This is one of the coolest guest book written in php/MySQL. You can download software from smartisoft website. Only problem is it does not show you admin url by default. Here is url that you need to use it! yourdomain.com YOURPASSWORD is stored in your config.php as variable $adminpass! Have a fun!!! http://www.domain.com/guestbook/guestbook.php?action=admin&admin=YOURPASSWORD

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If you rum rm command accidentally and deleted important a file, recovery becomes critical under Linux and/or UNIX oses. Since Linux is multiuser and multitasking operating system other users/process can overwrite deleted file disk space. So you need to take down system to single user mode. First use wall (only the super-user can write on […]

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This is bit tricky. But it is possible to configure MRTG for Virtuozzo VPS Linux. Please see MRTG configuration howto if you are new to MRTG. After running command: # cfgmaker –global ‘WorkDir: /var/www/html/mymrtg’ –output /etc/mrtg/mymrtg1.cfg public@rh3.cyberciti.org Above command will only look for 127.0.0.1 (both lo and venet0)as rest of real ips are alias to […]

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Recently I got chance to play with Virtuozzo VPS. Good news is they are good to reduced cost and bad news (as of Dec-04, 2004) they do not support full iptables rule set like –state and –log etc. After spending more than 4+ hrs I was able to setup simple but effective firewall on Red […]

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Explains how to bind Qmail SMTP to particular IP address.

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A question from my email bag – How do you find out all drivers loaded by FreeBSD kernel?

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FreeBSD comes with kldstat command. The kldstat utility or command displays the status of any files dynamically linked into the kernel. And the kldunload utility unloads a file which was previously loaded with lldload command. You can use kldunload command as follows. Unload a file from the kernel First login as a root user (use […]

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