"Repetitive tasks
Sometimes, you might want to repeat a task a number of times. For example, right now I want to find out which one is faster on PHP: Using variables or defining constants
"I have two script where I define a constant/variable (depending on the script) and I write its value to stdout. Let's say I want to run the variable.php script 1000 times. What I do is:
"i=0; while [ $i -lt 1000 ]; do php variable.php > /dev/null; i=$(( $i + 1 )); done
"But what does all that stuff mean? Let's decompose it:"
