By: ab

October 8, 2009 4:27 pm


LJDT: The 'watch' command

Do you ever find yourself running a command, pressing the up-arrow, then [Enter], then the up-arrow, then [Enter], then the up-arrow.... this is a great exercise that will get your fingers used to typing random odd key sequences without your eyes paying attention, but otherwise it's a complete waste of time. A command I have […]

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By: maggot62

July 22, 2009 5:41 pm


SUDO or not SU

Security is weakened when the root password is known, as administrators leave they may still have the root password and access to the system. Rather than give administrators the root password; why not consider assigning them the ability to run /bin/su via the sudo command? This way you do not need to divulge the root […]

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By: mendesdomnic

March 19, 2008 1:41 am


Fix Command Typos Quickly

Fix command typos smart and quickly. You want to create a directory. We do the same using the mkdir command. But oops you type mkdri by mistake. How do you fix this? Well instead of the usual backspace and retyping, Use the Ctrl+T keys and the command will be fixed for you. $mkdri Ctrl+T $mkdir […]

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By: mlfarrell

November 30, 2007 2:12 pm


Finding Open Files and Network Connections

Among the many benefits of using the Linux Operating system, lies the ability to obtain extensive information about the processes running at any given moment and the resources they consume. This article introduces two very useful Linux commands: lsof, and netstat which will give you a complete list of all open files or network connections […]

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By: salal

November 16, 2007 10:10 am


Useful RPM Commands

RPM package is a powerful utility for managing the software packages of major Linux distributions. RPM can be used to install and remove software packages, update packages and get an overview of all installed packages. Here are some useful commands to manipulate RPM packages: == Query / Verify commands Getting detailed information about the package […]

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September 12, 2007 2:14 pm


Solving Error when using df -h

Problem: When you enter dh -h command on the Linux console it suddenly throws the following error: df: cannot read table of mounted file systems: no such file or directory. This is mainly because the system is out of disk space. Hence it is not able to run df -h. If you give mount command […]

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