I Did Not Know: xargs -n and -P
Say you need to md5sum 46 files, all ending in “.foo” in a single directory. You might use your standard md5sum *.foo > md5sum.txt command to checksum them all in one process. Get coffee, it’s done, move on.
Scalability
Apple Store: "Unngh"
This is what Apple gets for releasing a sweet new Mac mini on iPhone 4 Pre-Order Day. The throngs are clogging up the tubes and the iProducts are not moving.