--------------------------------------------------------------------時區
date
Fri Apr 24 08:13:46 AM UTC 2026
sudo timedatectl set-timezone Asia/Taipei
date
Fri Apr 24 04:16:53 PM CST 2026
--------------------------------------------------------------------cpu、memory、disk
lscpu
free -h
df -h #"Disk Free"，-h 代表 "Human-readable"，會以 GB 或 MB 顯示
du -h #"Disk Usage"
sudo du -sh /var/log
lsblk -p /dev/sda #list block devices 查看樹狀分區結構
sudo fdisk -l /dev/sda #manipulate disk partition table 查看分區表詳細規格
--------------------------------------------------------------------定輸出年、月的月曆
cal 04 2026
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