Here is a quick Linux tip to block incoming access to port 80 using iptables.
iptables -A INPUT -j DROP -p tcp –destination-port 80 -i eth0
The code above will drop all tcp packets coming into your Linux computer on device eth0 on port 80.  If your Internet connection runs through a device other than eth0, go [...]

Popularity: 5% [?]

Click here to read more

This is a guest post by Taylor Douglass
The command line interface (CLI) is a very powerful part of Linux. Linux beginners undoubtedly agree that at first it can seem a bit daunting and even dangerous. While it is true that there far more Linux commands available than most will ever want or need [...]

Popularity: 4% [?]

Click here to read more

Here is a quick tip on how to display the top largest files and directories within my home directory:

# du -hs /home/adam/* | sort -nr | head

Cheers!
Popularity: 5% [?]

Popularity: 5% [?]

Click here to read more

This is a guest post by Taylor Douglass
The other day I ran across a script at shell-fu that generates a random quote from their website (here). I thought it would be useful to make this a command that I could execute at any terminal at anytime. Let’s get started.
First of all you are going [...]

Popularity: 5% [?]

Click here to read more

If you want to remove all blank lines from a file, a quick way of doing it from the Linux command line is to use sed.
So, lets say that your file looks like this:
# vi example_file
This is an example text file.
We will be using sed to remove blank lines from this example file.

sed is a [...]

Popularity: 5% [?]

Click here to read more

Here is a quick tip on how to list files in a directory with a certain date stamp using awk.
Let’s say that you want to list all files stamped with 2008-04-11.
# ls -l | awk ‘{if($6==”2008-04-11″) print $N }’
-rw-r–r– 1 adam users 0 2008-04-11 16:27 file1
-rw-r–r– [...]

Popularity: 3% [?]

Click here to read more

Theres been a question I have seen on multiple occasions both on the “How do I explain Linux to a Windows user” end as well as the “What is Linux?” question. That got me thinking.. what is the best way to explain Linux to a normal Windows user who has never heard of Linux? [...]

Popularity: 6% [?]

Click here to read more

Here is a quick tip on how to run crontab every 5 minutes.
*/5 * * * * /home/adam/script.sh will execute script.sh every 5 minutes.
Also, here’s a quick guide to understaning the layout of cron:
# MIN HOUR DAYOFMONTH MONTH DAYOFWEEK COMMAND
5 * [...]

Popularity: 43% [?]

Click here to read more

Here’s a quick tip for finding files over 100M on Linux.
# find /home/adam/ -size +100M -exec ls -lh {} \; | awk ‘{print $5 , $8}’
Note that if you change 100M in the command you can find files with any size.   Also, replace /home/adam with any directory you wish.
Popularity: 7% [?]

Popularity: 7% [?]

Click here to read more

As an iPod owner and Linux user, there are a few options I have on Linux for managing my iPod music library. In my opinion, the best option available is gtkpod. One great option of gtkpod is the ability to backup your iPod music to your hard drive for free. The purpose [...]

Popularity: 12% [?]

Click here to read more