May 8, 2010

PRTG Network Monitor

Network,

PRTG Network Monitor runs 24/7 on a Windows-based machine within your network, recording network usage parameters. Recorded data is stored in a database for historic reports. The easy to use web-based user interface allows to configure the devices and sensors that you want to monitor. You can create usage reports and provide colleagues and customers…

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May 7, 2010

Linux – Advanced Commands

Linux General,

Show status of ethernet interface eth0: ethtool eth0 List addresses for interfaces: ip addr show (OR) ip a Set default gateway: ip route add default via 1.2.3.254 List routing table: ip route show Add (or del) ip and mask (255.255.255.0): ip addr add 1.2.3.4/24 brd + dev eth0 Text Manipulation: Replace string1 with string2: sed…

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May 7, 2010

Linux – Ethernet bonding

Linux General,

Linux bond or team multiple network interfaces (NIC) into single interface We have two Dell servers that need setup with Intel Dual Gig NIC. My idea is to improve performance by pumping out more data from both NIC without using any other method. This box act as heavy duty ftp server. Each night I need…

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May 7, 2010

Linux – Tweaks

Linux General,

Fork Bomb on Linux/Unix: Q. Explain following bash code or bash fork() bomb? : () { : | :& };: A. This is a bash function. It gets called recursively (recursive function). This is most horrible code for any Unix / Linux box. It is often used by sys admin to test user processes limitations…

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