Most articles on security for Linux are firmly rooted in the guidance of tried-and-tested Unix usage.
This means that they dust off the same dry points on keeping the network locked away, minimising the risk by locking down the system and only giving access to the people who really need it, then draw a conclusion that boils down to a form of the old adage 'it's better to be safe than sorry'.
Linus Torvalds is a regular visitor to Australia in January. He comes out for some sunshine and to attend the annual linux.conf.au organised by Linux Australia. He took some time out to speak to Rodney Gedda about a host of topics including point releases, filesystems and what it is like switching to GNOME. He also puts Windows 7 in perspective.
Both the ~/.bashrc and ~/.bash_profile are scripts that might be executed when bash is invoked. The ~/.bashrc file gets executed when you run bash using an interactive shell that is not a login shell. The ~/.bash_profile only gets executed during a login shell. What does this all mean? The paragraphs below explains interactive shells, login shells, .bashrc, .bash_profile and other bash scripts that are executed during login.
I've put together another 5 ImageMagick command line examples as a followup to part 1. These examples are a little more advanced and include some extra information on techniques.
This document presents various ways of annotating a large image with either text or some other image. The annotation may be bold and highly visible, or subtle and hidden. Reasons for annotating images are varied, but are usually either to
Mark the image with information about what the image is about.
Point out or highlight some aspect of the image.
Add copyright or logos to the image as a form of copy protection.
Rectangle, text, and image requires an upper left and lower right coordinate. Circle requires the center coordinate and a coordinate on the outer edge. Finally, polygon requires three or more coordinates defining its boundaries. Coordinates are integers separated by an optional comma. For example, to define a circle centered at 100,100 that extends to 150,150 use:
-draw 'circle 100,100 150,150'
Lets start with the oldest, simplest, and most common drawing primitives of the "-draw" image operator of MVG commands. Note that all arguments are treated as floating point, and do not have to be integers, such as I typically use in these examples.
links for 2009-01-2626 01 2009