Browsing Archive: July, 2011

Explaining Binary, Bit, Byte, Kilobyte, Megabyte, Gigabyte and Terabyte

Posted by Rena Borges on Friday, July 22, 2011, In : Binary 

Binary is a number system used by digital devices like computers, cd players, etc.

In Binary you can write just zeroes and ones; In other words, Binary has only 2 different numerals (0 and 1) to denote a value, unlike Decimal which has 10 numerals (0,1,2,3,4,5,6,7,8 and 9).

Here is an example of a binary number: 10011100

If you separate the binary in columns like this, you will have your zeros and ones for our known normal numbers called decimal.

If we would continue wi...

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Unix Tutorial (3) Files

Posted by Rena Borges on Tuesday, July 5, 2011, In : Unix 

cp (copy)

cp file1 file2 is the command which makes a copy of file1 in the current working directory and calls it file2


mv (move)

mv file1 file2 moves (or renames) file1 to file2

To move a file from one place to another, use the mv command. This has the effect of moving rather than copying the file, so you end up with only one file rather than two. It can also be used to rename a file, by moving the file to the same directory, but giving it a different name.


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