Tag Archives: server

February, 2010

• 16 February

  How to compare two files in Linux

  Question: I have two scripts in a directory on my server. One is the right one and one is not, but I do not remember which is which. How can I compare the two files? Answer: Linux and UNIX-like operating systems usually come with a comparison command called “diff”. This …
• 16 February

  How to delete duplicate files in Linux

  Question: Two of my directories on my server have some the same files. How can I easily delete any duplicates while preserving the unique files? Answer: There exists a Linux tool for just about everything, and this is no exception. You need a tool called fdupes, which searches the path …
• 15 February

  How to list all users in Linux

  Question: How do I see all of the users that have accounts on my server? Answer: In a previous post, we covered the “who” command, which will tell an administrator which users are currently logged into the system, but another important thing to know about your server is which users …
• 12 February

  Virtual machine memory allocation

  Question: How much memory will I need to run virtual machines on my server? Answer: There is no simple answer to this question. Generally speaking, to virtualize an operating system you need at least as much RAM as is normally required to run the OS independently. Therefore, if your OS …
• 11 February

  Micro-blogging on your own domain with StatusNet

  

  Twitter has become very popular in a short amount of time. With it, users can post short updates about what they are currently doing, working on, thinking, or viewing/accessing. For businesses, it is a good way to communicate with others who might not be in the same office or even …
• 11 February

  Share file folders on a Linux server

  Many web-based organizations depend on the ability to communicate and share files easily. Even if you already have a website, however, you might not have an easy way to share files and folders, aside from giving each user FTP or SSH access. There are proprietary solutions, such as Dropbox or …
• 10 February

  Linux server backup to Amazon S3

  Amazon S3 is a storage service provided by Amazon.com. It is part of Amazon’s cloud computing offering, and it used by all sorts of individuals and businesses. Although anyone with a Linux server can theoretically backup their server manually to S3 storage, it helps to have a tool to do …
• 9 February

  How to schedule a reboot on a Linux server

  Automating tasks in Linux is a pretty straightforward process, mainly because the tool used to do it comes with all Linux distributions. It is called Cron, as we mentioned in an earlier post. Cron allows you to automate all sorts of tasks, including reboots. But if you just need to …
• 9 February

  3 tools to keep your website secure, accessible, and fast

  Whenever you start a new website, you want to make sure everyone can see it, that it loads quickly, and that hackers can’t bring it to its knees. Here are a few useful web tools to make sure you cover all three: 1. Accessibility. A-Checker – An accessibility testing tool. …
• 8 February

  How to set resource limits on PHP

  In a previous post, we learned how to increase the memory limit on PHP by editing the php.ini file. But limits exist for a reason, and although you would probably love to give every process, every script, and every website unlimited CPU cycles, memory, and bandwidth, it just isn’t possible. …