make-tree

非常经典的一个分布式系统

#!/bin/sh

# reduce LEVELS from 3 => 2 by CFS
LEVELS=2 ;		[ -z "$1" ] || LEVELS=$1
DIRS=10 ;		[ -z "$2" ] || DIRS=$2
FILES=10 ;		[ -z "$2" ] || FILES=$3
NUMBER_OF_ACLS=50 ;	[ -z "$3" ] || NUMBER_OF_ACLS=$4

function random_dir() {
	mkdir -p $1
	#setfacl -s "u::rwx,u:$[($RANDOM % $NUMBER_OF_ACLS)+1000]:rwx,g::rx,o:-" $1
}

function random_file() {
	touch $1
	#setfacl -s "u::rw,u:$[($RANDOM % $NUMBER_OF_ACLS)+1000]:rw,g::r,o:-" $1
}

function create () {
	local LEVEL=$1
	if [ $LEVEL -eq 0 ]; then
		local I=0
		while [ $I -lt $FILES ]; do
			random_file file$I
			I=$[$I+1]
		done
	else
		local I=0
		while [ $I -lt $DIRS ]; do
			random_dir dir$I
			cd dir$I
			create $[$LEVEL-1]
			cd ..
			I=$[$I+1]
		done
	fi
	return
}

mkdir -p tree
cd tree
create $LEVELS
cd ..
exit 0