This is similar to how you would generate a file with all zeros
dd if=/dev/zero of=allzeros bs=1024 count=2k
Makes it easy to add keys to new ppa sources entries in apt sources.list
Now to add the key for the chromium-daily ppa:
launchpadkey 4E5E17B5
Show Sample Output
You can use a site like http://www.jsonlint.com/ or use the command line to validate your long and complex json data. This is part of the simplejson package for python http://undefined.org/python/#simplejson.
Wrong json expression example:
echo '{ 1.2:3.4}' | python -m simplejson.tool
Expecting property name: line 1 column 2 (char 2)
Show Sample Output
Copy a file to a range of other files. Show Sample Output
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