Installing eAccelerator on mod_php

PHP is an interpreted language. That unfortunately means that every time a client requests a PHP page from your site, the PHP interpreter has to re-read the script and compile it on the fly before it is run.

All this costs valuable processing time and if you're under heavy load or working in an environment where you don't have an awful lot of CPU grunt available to you ...

Click through to read more...

Fix a Frozen System with the Magic SysRq Keys

You finally got your Linux environment to crash. Ctrl+Alt+Backspace does nothing, nor do the F-keys. You know you shouldn't have installed that bad driver, but you did it anyway.

So you reach for the power button.

Stop.

Mashing in the power button to reboot could cause a problem if your hard drive is still being written to, and usually causes more problems than it solves. The Linux ...

Click through to read more...

View process hierarcy from the command line - pstree

The commands ps and top are very useful for seeing what's running on your system. Operating systems like Linux though actually have a hierarchical system of processes, and by default neither of those two show you that hierarchy.

That's where pstree comes in. As the name suggests, it shows you a tree-style list of processes in this hierarchy. As you can see, depending on the exact flavour of ...

Click through to read more...

  1. 1
  2. ...
  3. 35
  4. 36
  5. 37
  6. 38
  7. 39
  8. ...
  9. Go to