nixCraft Linux Sys Admin Blog

Find Out Salaries Of UNIX / Linux Admin Offered By Various Fortune 500 Companies

Posted: 26 Sep 2008 07:00 AM PDT

You can search over 500K jobs, companies and actual salaries offered by various fortune 500 companies accross US. Search is based on accurate data which is published by department of labor, USA.

Security Alert: How To Stop Firefox Clickjacking Exploit Attack

Posted: 26 Sep 2008 06:03 AM PDT

Really scary exploit attack in wild, which affects all browsers under any desktop operating systems including MS IE, Linux, Apple safari, Opera, Firefox and Adobe flash. Any website that uses CSS and IFRAME (used to serve ads) can be used to attack on end users as attacker is able to take control of the links that your browser visits. In this article I will share few tips to stop this deadly attack until final patch is released by vendors.

Alarm clock: How To Set Timeout For A Shell Command

Posted: 26 Sep 2008 06:29 AM PDT

Q. How can I run a command called foo, and have it timeout / abort after 10 seconds under GNU/Linux running bash shell or script? How do I run command under an alarm clock?

Answer to "Alarm clock: How To Set Timeout For A Shell Command"

FreeBSD Apache Jail: Connection refused: connect to listener on 0.0.0.0:80 Error and Solution

Posted: 25 Sep 2008 09:36 AM PDT

Q. I'm running Apache 2 server under FreeBSD jail. However, I see lots of warning / error messages in /var/log/httpd-error.log as follows:

[Sat Sep 20 20:47:09 2008] [warn] (61)Connection refused: connect to listener on 0.0.0.0:80 [Sat Sep 20 20:47:10 2008] [warn] (61)Connection refused: connect to listener on 0.0.0.0:80 [Sat Sep 20 20:47:11 2008] [warn] (61)Connection refused: connect to listener on 0.0.0.0:80

How do stop all these warning messages flooding my Apache log files?

Answer to "FreeBSD Apache Jail: Connection refused: connect to listener on 0.0.0.0:80 Error and Solution"