嵌入式开发必备-RK3562演示Linux常用系统查询命令（上）触觉智能出品

本文介绍Linux系统查看硬件配置及常用调试命令，方便开发者快速了解开发板硬件信息及进行相关调试。触觉智能RK3562开发板演示，搭载4核A53处理器，主频高达2.0GHz；内置独立1Tops算力NPU，可应用于物联网网关、平板电脑、智能家居、教育电子、工业显示与控制等行业。

查看DDR

• 获取内存信息

下面数字以MB为单位。

root@ido:/# free -m total used free shared buff/cache available Mem: 1970 287 1316 19 366 1638 Swap: 0 0 0

• 更详细信息可以使用下面命令查看

root@ido:/# cat /proc/meminfo MemTotal: 2017532 kB #总内存的大小 MemFree: 1347508 kB #系统当前可用的空闲内存大小 MemAvailable: 1677712 kB #系统当前可用的内存大小，这包括空闲内存和缓存的内存。 Buffers: 32500 kB Cached: 309484 kB SwapCached: 0 kB Active: 108648 kB Inactive: 433624 kB Active(anon): 1080 kB Inactive(anon): 219252 kB Active(file): 107568 kB Inactive(file): 214372 kB Unevictable: 8132 kB Mlocked: 0 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 0 kB Writeback: 0 kB AnonPages: 208420 kB Mapped: 189896 kB Shmem: 20044 kB KReclaimable: 33300 kB Slab: 74908 kB SReclaimable: 33300 kB SUnreclaim: 41608 kB KernelStack: 5328 kB PageTables: 7736 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1008764 kB Committed_AS: 1675032 kB VmallocTotal: 263061440 kB VmallocUsed: 11944 kB VmallocChunk: 0 kB Percpu: 720 kB CmaTotal: 16384 kB CmaAllocated: 1600 kB CmaReleased: 14784 kB CmaFree: 2088 kB

• 查看DDR频率

下面数字以hz为单位。

root@ido:/# free -m total used free shared buff/cache available Mem: 1970 287 1316 19 366 1638 Swap: 0 0 0

查看存储

• 查看物理存储空间

root@ido:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT mmcblk2 179:0 0 14.6G 0 disk ├─mmcblk2p1 179:1 0 4M 0 part ├─mmcblk2p2 179:2 0 4M 0 part ├─mmcblk2p3 179:3 0 64M 0 part ├─mmcblk2p4 179:4 0 128M 0 part ├─mmcblk2p5 179:5 0 32M 0 part ├─mmcblk2p6 179:6 0 2G 0 part /media/ido/userdata ├─mmcblk2p7 179:7 0 128M 0 part /media/ido/oem └─mmcblk2p8 179:8 0 12.2G 0 part / mmcblk2boot0 179:32 0 4M 1 disk mmcblk2boot1 179:64 0 4M 1 disk

• 查看文件系统空间

root@ido:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 12G 3.5G 8.0G 31% / devtmpfs 974M 8.0K 974M 1% /dev tmpfs 985M 0 985M 0% /dev/shm tmpfs 197M 7.6M 190M 4% /run tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 985M 0 985M 0% /sys/fs/cgroup tmpfs 197M 0 197M 0% /run/user/0 tmpfs 197M 8.0K 197M 1% /run/user/1001 /dev/mmcblk2p7 121M 12M 101M 11% /media/ido/oem /dev/mmcblk2p6 2.0G 36K 1.8G 1% /media/ido/userdata

查看CPU

• 查看CPU频率

下面数字以kHz为单位。

root@ido:/# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq 408000 408000 408000 408000

• 查看CPU温度

下面数字以毫摄氏度为单位，需要除以1000即35摄氏度。

root@ido:/# cat /sys/class/thermal/thermal_zone0/temp 34375

查看网络信息

• 查看网络节点及IP

root@ido:~# ifconfig enp1s0: flags=4163 mtu 1500 inet 192.168.0.96 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::a60a:bffe:32d2:8a02 prefixlen 64 scopeid 0x20 ether 9a:55:02:97:d9:a2 txqueuelen 1000 (Ethernet) RX packets 121 bytes 12817 (12.8 KB) RX errors 0 dropped 2 overruns 0 frame 0 TX packets 31 bytes 5749 (5.7 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 90 base 0xd000 eth0: flags=4099 mtu 1500 ether 8a:18:a3:a0:63:c9 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 71 eth2: flags=4099 mtu 1500 ether 8e:18:a3:a0:63:c9 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 75 lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 192 bytes 14785 (14.7 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 192 bytes 14785 (14.7 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlan0: flags=4099 mtu 1500 ether c0:f5:35:12:5a:40 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

• 查看网关

root@ido:~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.0.1 0.0.0.0 UG 100 0 0 enp1s0 192.168.0.0 0.0.0.0 255.255.255.0 U 100 0 0 enp1s0

更多Linux常用系统查询命令，请关注下集。