# Problem 1: No history log; [default] using sar will check the log.
	ray@[๑'ㅂ'و]✧ sudo sar 
	Cannot open /var/log/sysstat/sa06: No such file or directory
	Please check if data collecting is enabled in /etc/default/sysstat
	# Solution: Generate corresponding log
	ray@[๑'ㅂ'و]✧ sudo sar -o 06