统信桌面操作系统专业版V20（1070）
Linux uos 5.10.97-arm64-desktop
uos基础 free 查看内存和交换区
code@uos:~$ free
total used free shared buff/cache available
Mem: 15875708 3621252 7019804 354776 5234652 11812560
Swap: 2047996 0 2047996
code@uos:~$ free -m
total used free shared buff/cache available
Mem: 15503 3536 6864 336 5103 11545
Swap: 1999 0 1999
code@uos:~$ free -g
total used free shared buff/cache available
Mem: 15 3 6 0 4 11
Swap: 1 0 1
code@uos:~$
