General :: Convert The Numbers Back Into Their Corresponding ASCII Character

May 19, 2010

To encrypt the text, we take the word "python" and make it at least the same size as "welcome home" by repeating it as follows:

w e l c o m e h o m e
p y t h o n p y t h o n
Then, we convert each letter into its numerical ASCII value as follows:
w e l c o m e h o m e = 119 101 108 099 111 109 101 032 104 111 109 101

[Code].....

And, finally, we convert the numbers back into their corresponding ASCII character:

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[URL] under Fedora 14 - Bash:
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<a href="http://www.net-security.org/secworld.php?id=10607">biometric cabinet lock detects life in the finger</a>
ASDF
$
[Code]...

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2.What directory contains some of the utilities available on the system in the form of binary files?

3. What command is used to search the location of a utility?

4. What command is used to instruct the editor to write the file and quit the editor?

5. What key quits the more utility and displays the shell prompt?

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[Code]....

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Here is the perl script that convert single ascii file to hex in single line:

Quote:

So I would like to read multiple file from a directory.

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Quote:

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vi = /bin/vi
vim = /usr/bin/vim

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[Code]...

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Code:

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Code:

The error is:

Code:

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My full code is:

Code:

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I'm working with a rather large file of data taking from a tracking program on my phone, and trying to pull only the longitude and latitude from it. Any given line in the data looks more or less like this:

{"lon":-122.3083848,"time":1.273515839496E9,"source":"skyhook","nap":28,"altitude":0,"name":"location","hpe" :29,"bearing":0,"ncell":0,"lat":47.6544453}

I've run it through this command:

grep skyhook log-2010-05-10_18-17-28.json | cut -d"," -f1,10

to get this:

{"lon":-122.30872015,"lat":47.65812201}
{"lon":-122.3076686,"lat":47.6569975}
{"lon":-122.3079161,"lat":47.656395}
{"lon":-122.3096168,"lat":47.656218}
{"lon":-122.3096285,"lat":47.656206}

Which is a lot nicer, but I would prefer not to have to hand remove the non-number characters by hand since there are thousands of data points. what I could do to get it to just be longitude and latitude in 'number number' format?

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