Tag Archives: linux

November, 2009

• 26 November

  Creating a test server

  Question: I am new to Linux server administration. Is there any way to create a test server without having to buy a new computer or dual boot my Windows machine? Answer: Yes there is a way, and virtualization is the answer. There are many paid virtualization options like Vmware, but …
• 25 November

  Getting rid of crontab emails

  Question: How do I stop crontab from sending me emails after a cron job finishes? Answer: In Linux the default setting for crontab is to send an email to the owner after a cron job finishes. An easy way to change this is to reroute those emails into nothingness, which …
• 20 November

  Changing a User's Group in Linux

  Question: How do I add a user to a group in Linux? Answer: Now that you have created a new user, you may need to add the user to a special group. To accomplish that, follow these easy steps. 1. Login to your server via SSH. 2. Become root: su …
• 20 November

  Adding Users in Linux

  Question: How do I manually add a user on my Linux server? Answer: There are many reasons why you might want to add a user manually. Some scripts require their own special users with generic permissions to run them. Creating a user is actually very easy. Just follow these steps: …
• 19 November

  Grep: A Powerful Search Tool

  Grep is a powerful Linux tool that can make finding things much easier. If you have SSH access to your server and need to find something lost in your big mess of files, grep can help. A simple way to use grep is: grep "modern" /home/user/public_html/podcasts.opml This command will search …
• 19 November

  The "history" command in Linux

  If you spend a lot of time working from the command line on your server, you will undoubtedly grow tired of having to type the same ones repeatedly in a session. And if you are anything like me, you might grow tired of having to look up long strings of …
• 17 November

  Using the "ls" Command in Linux

  In Linux, few commands are more important when managing your file system than “ls”. On a server, it is very important to know how to view files and their properties. With “ls” you can view a simple list of files or any number of more complicated variations of the list. …
• 16 November

  Monitoring Connectivity with Traceroute

  In the hopefully unlikely event that you are unable to access your website, the first thing you should check is your own network connection. You may find that you cannot access any websites. If that is not the case, there is a network problem between your computer and your server. …
• 12 November

  New ModSecurity Book

  ModSecurity, a free and open source application firewall, is one of the best in the industry. Packt Publishing will soon be releasing a book about the software called ModSecurity 2.5 by Magnus Mischel. “This book is written for system administrators or anyone running an Apache web server who wants to …
• 12 November

  Advanced Policy Firewall (APF)

  Few issues with dedicated servers are more important than security, and no security software is overlooked more than firewalls. Most people expect firewalls to work the way they want them to without any effort. While that is impossible, there is a free software firewall solution available that makes installation, setup, …