Download article as PDF Many users tend to worry when the free memory on a Linux system is very low. Especially when the system is barely active. What many don’t know is that this is normal behavior for Linux. It simply takes your free memory and caches it. This caching behavior makes subsequent memory allocations [...]
Download article as PDF Dig, not to confuse with the social network Digg, is a tool that allows one to trouble shoot or view domain name DNS data. Dig is in the category of essential tools. Just like a voltage tester is an essential tool for an electrician, dig the most important tool for domain [...]
Download article as PDF Pure-ftpd has no direct support to prevent files with certain extensions from being uploaded. But it’s possible to accomplish this goal using a pure-ftp feature. pure-ftpd has a post-upload program that runs after each file is successfully uploaded and can run an external program. Here’s the excerpt from the pure-ftpd manual: [...]
