Uuencode: Difference between revisions

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__NOTOC__
__NOTOC__
= uuencode =
= uuencode =
This is useful to install a binary from an script like an executable file, a zip or even an rpm. First be sure to have the needed tools installed
This is technique is useful to embed a binary file on a script. First ensure to have the proper package installed
<pre><nowiki>
<pre><nowiki>
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=== Encode - Binary to text ===
== How to encode binary files to text ==
Execute the following command
Suppose we want to encode the `~/.Xauthority` file, the execute in command line
<pre><nowiki>
<pre><nowiki>
/usr/bin/uuencode ~/.Xauthority -
/usr/bin/uuencode /path/to/binary/file -
</nowiki></pre>
</nowiki></pre>


Note the dash at the end of the command
Note the hyphen at the end of the command


=== Decode - Text to binary ===
== How to decode text files to binary ==
Then copy the result string from stdin to your script as follows
To restore a binary file from text copy the result string from stdin to your script as follows
<pre><nowiki>
<pre><nowiki>
/usr/bin/uudecode > ~/.Xauthority << 'EOF'
/usr/bin/uudecode > /path/to/binary/file << 'EOF'
begin 644 -
begin 644 -
M````!'\```$``3``$DU)5"U-04=)0RU#3T]+244M,0`0(581,6(<1J&_0`OE
M````!'\```$``3``$DU)5"U-04=)0RU#3T]+244M,0`0(581,6(<1J&_0`OE
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</nowiki></pre>
</nowiki></pre>


The output of the above command always must be redirected to a file.
Since this commands yields the result to stdin you should redirect it to a file, specially with decoding process that will generate a binary file.

Revision as of 07:33, 9 November 2012

uuencode

This is technique is useful to embed a binary file on a script. First ensure to have the proper package installed

 yum -y install sharutils
 


How to encode binary files to text

Execute the following command

 /usr/bin/uuencode /path/to/binary/file -
 

Note the hyphen at the end of the command

How to decode text files to binary

To restore a binary file from text copy the result string from stdin to your script as follows

 /usr/bin/uudecode > /path/to/binary/file << 'EOF'
 begin 644 -
 M````!'\```$``3``$DU)5"U-04=)0RU#3T]+244M,0`0(581,6(<1J&_0`OE
 M_:%-L@$``!5L;V-A;&AO<W0N;&]C86QD;VUA:6X``3``$DU)5"U-04=)0RU#
 93T]+244M,0`0(581,6(<1J&_0`OE_:%-L@``
 `
 end
 EOF
 

The output of the above command always must be redirected to a file.