Linux Shell Scripting Cookbook - Third Edition

How to do it...

Using these steps, we can use the following command chain:

    $ cat sample.js |  \
    tr -d '\n\t' |  tr -s ' ' \
    | sed 's:/\*.*\*/::g' \
    | sed 's/ \?\([{}();,:]\) \?/\1/g' 

The output is as follows:

    function sign_out(){$("#loading").show();$.get("log_in",  
    {logout:"True"},function(){window.location="";});}

The following decompression script makes the obfuscated code readable:

    $ cat obfuscated.txt | sed 's/;/;\n/g; s/{/{\n\n/g; s/}/\n\n}/g' 

Or:

    $ cat obfuscated.txt | sed 's/;/;\n/g' | sed 's/{/{\n\n/g' | sed   
    's/}/\n\n}/g'

There is a limitation in the script: that it even gets rid of extra spaces where their presence is intentional. For example, if you have a line like the following:                 var a = "hello world" ...