Thursday, September 27, 2012

Sudo Full Practical Session

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Introduction Before we proceed, it would be best to cover some basic user administration topics that will be very useful in later c...
Wednesday, September 26, 2012

Using chkconfig to Start Daemons at Each runlevel

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As stated earlier, the chkconfig command can be used to adjust which applications start at each runlevel. You can use this command with ...

Basic's of Networking

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1. Define Network? A network is a set of devices connected by physical media links. A network is recursively is a connection of two...
Friday, September 21, 2012

Linux / Unix Commands For Connecting To The Serial Console

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M ost embedded Linux / BSD systems such as routers, servers and nas devices comes with console interface (serial port with RS-232). BIOS ...

How To Check and Use Serial Ports Under Linux

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H ow do I check and configure serial ports under Linux for various purposes such as modem, connecting null modems or connect a dumb termi...
Tuesday, September 18, 2012

Troubleshooting Disk and Data store Related Issues  SHOOT:2

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SHOOT: 2 VMFS Lock Volume is Corrupted Details You may observe the following events within the /var/log/vmkernel logs within yo...

Troubleshooting Disk and Data store Related Issues  SHOOT:1

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SHOOT: 1 Troubleshooting a VMFS resource volume that is corrupted The event indicates the reported VMFS volume is corrupted. ...
Wednesday, September 12, 2012

Allow A Normal User To Run Commands As root Under Linux / UNIX Operating Systems

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From my mail bag: I would like to run few commands such as stop or start web server as a root user. How do I allow a normal user to run...
Wednesday, September 5, 2012

Shell Script To Encrypt Any Given Text File

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In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called cipher) to m...

Shell Script List All Top IP Address Accessing Apache Web Server

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******************************** #!/bin/bash # Shell Script To List All Top Hitting IP Address to your webserver. # This may be use...