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:~$