Interesting idea. But as of right now, the recently submitted queries shown on the right almost all have wrong answers. For instance:

> Change jdk default version

    cd $( which oracle | xargs -I {} dirname {} )

> change the first character of every filename in this directory to "z"

    find z -type d -exec chown z {} \;

> count number of lines in a file

    wc -l $( wc -l )

> ping google.com every 5 seconds

    find . -name "*.com" | xargs -I {} tar -c -v -f google.com {}