Distributed Mind

• Replace every instance of a file on the system: find / -name filename | xargs -l1 -p cp filename (take out the -p to get xargs to not ask first)
• Count the number of lines of c code in the current directory: cat *.c | wc -l

These should be relatively easy to modify to your own purposes. Confused? Remember, man is your friend (e.g. try man wc). Note however that the man page on xargs is fairly incomplete on most systems I have checked on. That's ok though, because Google is your friend too.