Are you new here? Subscribe to my RSS feed. Thanks for visiting!If you’re looking to get rid of the annoying system beep in Ubuntu, here is how to do it from both the command line, and from the Gnome desktop.
Disable the System Beep from the Command Line
#sudo vi /etc/modprobe.d/blacklist
And then add:
#pc speaker beep
blacklist pcspkr
Save […]

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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 […]

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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 […]

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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!
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Popularity: 4% [?]

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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 […]

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Here is a quick one line command to generate a random password from the Linux command line.
# < /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c6
If you want a password length longer than 6, changing the -c6 to read -c8 will give you 8 random characters instead of 6.
Popularity: 4% [?]

Popularity: 4% [?]

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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 […]

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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– […]

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Here is a quick tip on how to add a welcome message for your SSH users.
If you want users to see a banner welcome message when connecting to your SSH server, you need to turn on the banner configuration of SSHd and then create a banner file.
Step 1:
Create a banner file that contains text you […]

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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 * […]

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