In our first tutorial on command line wizardry, we covered simple redirection and the basics of sed, awk, and grep. Today, we’re going to introduce the concepts of simple variable substitution and ...
The latest version of Automator (in OS X 10.5 Leopard) has several handy new features. Among the most useful: variables and looping. Unfortunately, unless you’re an experienced scripter, they’re also ...
A very simple variable power supply circuit can be made using this electronic circuit diagram .This variable regulator circuit will provide an variable regulated output voltage , between 0 and 50 ...
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