/ dd if=/dev/dsp | ssh -c arcfour -C
\ username@host dd of=/dev/dsp /


    \   ^__^
     \  (oo)\_______
        (__)\       )\/\
            ||----w |
            ||     ||

< python -m SimpleHTTPServer >


    \   ^__^
     \  (==)\_______
        (__)\       )\/\
            ||----w |
            ||     ||

< :w !sudo tee % >


    \   ^__^
     \  ($$)\_______
        (__)\       )\/\
            ||----w |
            ||     ||

commandlinefu.com is a public repository for handy bash one-liners like sudo !!, python -m SimpleHTTPServer or cp filename{,.bak} (run the last command as root, serve current directory tree at http://$HOSTNAME:8000/, and backup or copy a file). You can sort the entries by date or by popularity. I like it - it’s a convenient way to explore new commands and see what other people manage to do with the shell.

Snipt goes one step further and provides a database for all things related to coding, scripting and administration. Python, PHP, Ruby, Apache, C++, OS X - if you’re looking for a quick way to solve a specific problem, or want to explore a new language, give it a try.