=[奔跑吧2书中的debian系统]如何熟悉单板
benshushu:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 2.0G 1.1G 793M 57% /
devtmpfs 326M 0 326M 0% /dev
benshushu:~# i2cdetect -y l
-bash: i2cdetect: command not found
benshushu:~# cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux buster/sid"
NAME="Debian GNU/Linux"
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
benshushu:~#
benshushu:~# lsmod
Module Size Used by
benshushu:~# cd /proc
benshushu:proc# cat cpuinfo
processor : 0
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm flagm sb paca pacg
CPU implementer : 0x00
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x051
CPU revision : 0
processor : 1
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm flagm sb paca pacg
CPU implementer : 0x00
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x051
CPU revision : 0
processor : 2
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm flagm sb paca pacg
CPU implementer : 0x00
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x051
CPU revision : 0
processor : 3
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm flagm sb paca pacg
CPU implementer : 0x00
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x051
CPU revision : 0
benshushu:proc# cat meminfo
MemTotal: 736564 kB
MemFree: 555076 kB
MemAvailable: 605300 kB
Buffers: 6556 kB
Cached: 101984 kB
SwapCached: 0 kB
Active: 49164 kB
Inactive: 75264 kB
Active(anon): 16044 kB
Inactive(anon): 4700 kB
Active(file): 33120 kB
Inactive(file): 70564 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 15892 kB
Mapped: 19688 kB
Shmem: 4860 kB
KReclaimable: 16980 kB
Slab: 38312 kB
SReclaimable: 16980 kB
SUnreclaim: 21332 kB
KernelStack: 2976 kB
PageTables: 764 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 368280 kB
Committed_AS: 91352 kB
VmallocTotal: 135290159040 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
Percpu: 912 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 65536 kB
CmaFree: 65244 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
benshushu:proc# uname -a
Linux benshushu 5.0.0+ #1 SMP Sun Mar 5 23:53:17 CST 2023 aarch64 GNU/Linux
benshushu:proc# cat cmdline
noinitrd nokaslr loglevel=8 sched_debug root=/dev/vda rootfstype=ext4 rw crashkernel=256M vfio.dyndbg=+pflmt irq_gic_v3_its.dyndbg=+pflmt iommu.dyndbg=+pflmt irqdomain.dyndbg=+pflmt
benshushu:proc# cat interrupts
CPU0 CPU1 CPU2 CPU3
3: 68729 64985 66190 65516 GICv3 27 Level arch_timer
36: 2865 0 0 0 GICv3 79 Edge virtio0
38: 0 0 0 0 GICv3 106 Edge arm-smmu-v3-evtq
41: 0 0 0 0 GICv3 109 Edge arm-smmu-v3-gerror
42: 0 0 0 0 GICv3 34 Level rtc-pl031
43: 171 0 0 0 GICv3 33 Level uart-pl011
44: 0 0 0 0 GICv3 23 Level arm-pmu
45: 21 0 0 0 GICv3 36 Level virtio1
46: 8 0 0 0 GICv3 37 Level virtio2
IPI0: 17981 16990 13474 12741 Rescheduling interrupts
IPI1: 193 273 257 282 Function call interrupts
IPI2: 0 0 0 0 CPU stop interrupts
IPI3: 0 0 0 0 CPU stop (for crash dump) interrupts
IPI4: 0 0 0 0 Timer broadcast interrupts
IPI5: 0 0 0 0 IRQ work interrupts
IPI6: 0 0 0 0 CPU wake-up interrupts
Err: 0
benshushu:proc# cat device
device-tree/ devices
benshushu:proc# cat devices
Character devices:
1 mem
4 /dev/vc/0
4 tty
4 ttyS
5 /dev/tty
5 /dev/console
5 /dev/ptmx
5 ttyprintk
7 vcs
10 misc
13 input
29 fb
128 ptm
136 pts
204 ttyAMA
248 binder
249 vfio
250 bsg
251 watchdog
252 rtc
253 dax
254 gpiochip
Block devices:
7 loop
254 virtblk
259 blkext
benshushu:proc# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 2.0G 1.1G 788M 58% /
devtmpfs 326M 0 326M 0% /dev
tmpfs 360M 0 360M 0% /dev/shm
tmpfs 360M 4.8M 355M 2% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 360M 0 360M 0% /sys/fs/cgroup
kmod_mount 982G 19G 914G 2% /mnt
tmpfs 72M 0 72M 0% /run/user/0
benshushu:proc# fdisk -l
Disk /dev/vda: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
benshushu:proc# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 254:0 0 2G 0 disk /
benshushu:proc# cat iomem
09000000-09000fff : pl011@9000000
09000000-09000fff : pl011@9000000
09010000-09010fff : pl031@9010000
09010000-09010fff : rtc-pl031
09030000-09030fff : pl061@9030000
09030000-09030fff : pl061@9030000
09050000-0906ffff : smmuv3@9050000
0a003e00-0a003fff : a003e00.virtio_mmio
10000000-3efeffff : pcie@10000000
10000000-1003ffff : 0000:00:01.0
40000000-7fffffff : System RAM
40080000-41bfffff : Kernel code
41c00000-4208ffff : reserved
42090000-42240fff : Kernel data
48000000-480fffff : reserved
6ac00000-6fbfffff : reserved
6fd77000-6fdeefff : reserved
6fdf1000-6fdf2fff : reserved
6fdf3000-6fdf7fff : reserved
6fdf8000-6fdfffff : reserved
6fe00000-7fdfffff : Crash kernel
7fe00000-7fe00fff : reserved
7fe01000-7fe03fff : reserved
7fe04000-7fffffff : reserved
4010000000-401fffffff : PCI ECAM
8000000000-ffffffffff : pcie@10000000
8000000000-8000003fff : 0000:00:01.0
8000000000-8000003fff : virtio-pci-modern
8000004000-8000007fff : 0000:00:02.0
8000004000-8000007fff : virtio-pci-modern
benshushu:proc# ps -A
PID TTY TIME CMD
1 ? 00:00:29 systemd
2 ? 00:00:00 kthreadd
3 ? 00:00:00 rcu_gp
4 ? 00:00:00 rcu_par_gp
5 ? 00:00:00 kworker/0:0-events
6 ? 00:00:00 kworker/0:0H-kblockd
7 ? 00:00:04 kworker/u8:0-events_unbound
8 ? 00:00:00 mm_percpu_wq
9 ? 00:00:01 ksoftirqd/0
10 ? 00:00:30 rcu_sched
11 ? 00:00:00 migration/0
12 ? 00:00:01 kworker/0:1-events
13 ? 00:00:00 cpuhp/0
14 ? 00:00:00 cpuhp/1
15 ? 00:00:00 migration/1
16 ? 00:00:00 ksoftirqd/1
17 ? 00:00:00 kworker/1:0-cgroup_destroy
18 ? 00:00:00 kworker/1:0H-kblockd
19 ? 00:00:00 cpuhp/2
20 ? 00:00:00 migration/2
21 ? 00:00:00 ksoftirqd/2
22 ? 00:00:00 kworker/2:0-cgroup_destroy
23 ? 00:00:00 kworker/2:0H-kblockd
24 ? 00:00:00 cpuhp/3
25 ? 00:00:00 migration/3
26 ? 00:00:00 ksoftirqd/3
28 ? 00:00:00 kworker/3:0H-kblockd
29 ? 00:00:00 kdevtmpfs
30 ? 00:00:00 netns
33 ? 00:00:00 kworker/2:1-mm_percpu_wq
34 ? 00:00:00 khungtaskd
35 ? 00:00:00 oom_reaper
36 ? 00:00:00 writeback
37 ? 00:00:00 kcompactd0
38 ? 00:00:00 ksmd
39 ? 00:00:00 khugepaged
40 ? 00:00:00 crypto
41 ? 00:00:00 kintegrityd
42 ? 00:00:00 kblockd
43 ? 00:00:00 devfreq_wq
44 ? 00:00:00 watchdogd
45 ? 00:00:00 kswapd0
110 ? 00:00:00 kthrotld
112 ? 00:00:00 irq/38-arm-smmu
113 ? 00:00:00 kworker/2:1H-kblockd
114 ? 00:00:00 vfio-irqfd-clea
115 ? 00:00:00 ion_system_heap
116 ? 00:00:00 ipv6_addrconf
122 ? 00:00:00 kworker/3:2-cgroup_destroy
123 ? 00:00:00 kworker/3:1H-kblockd
124 ? 00:00:00 kworker/1:1H-kblockd
125 ? 00:00:02 jbd2/vda-8
126 ? 00:00:00 ext4-rsv-conver
127 ? 00:00:00 kworker/0:1H-kblockd
147 ? 00:00:08 systemd-journal
155 ? 00:00:00 kworker/1:2-cgroup_destroy
top
- 15:10:10 up 10 min, 1 user, load average: 1.14, 1.36, 0.97
Tasks: 82 total, 1 running, 81 sleeping, 0 stopped, 0 zombie
%Cpu(s): 9.6 us, 6.2 sy, 0.0 ni, 83.8 id, 0.0 wa, 0.0 hi, 0.4 si, 0.0 st
MiB Mem : 719.3 total, 540.7 free, 55.5 used, 123.1 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 590.2 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10 root 20 0 0 0 0 I 3.6 0.0 0:31.18 rcu_sched
5159 root 20 0 0 0 0 I 3.0 0.0 0:01.96 kworker/u+
6441 root 20 0 7584 2956 2556 R 1.6 0.4 0:00.54 top
125 root 20 0 0 0 0 S 1.3 0.0 0:02.43 jbd2/vda-8
750 root 20 0 2500 1532 1104 S 0.7 0.2 0:05.70 dhcpcd
1 root 20 0 165372 9524 6996 S 0.3 1.3 0:29.73 systemd
9 root 20 0 0 0 0 S 0.3 0.0 0:01.77 ksoftirqd+
124 root 0 -20 0 0 0 I 0.3 0.0 0:00.38 kworker/1+
127 root 0 -20 0 0 0 I 0.3 0.0 0:00.37 kworker/0+
2 root 20 0 0 0 0 S 0.0 0.0 0:00.17 kthreadd
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par_gp
5 root 20 0 0 0 0 I 0.0 0.0 0:00.45 kworker/0+
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/0+
7 root 20 0 0 0 0 I 0.0 0.0 0:04.07 kworker/u+
8 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu+
11 root rt 0 0 0 0 S 0.0 0.0 0:00.32 migration+
benshushu:proc# i2cdetect -l
-bash: i2cdetect: command not found
benshushu:proc# ifconfig
enp0s1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.2.15 netmask 255.255.255.0 broadcast 10.0.2.255
inet6 fe80::c86e:28c4:625b:2767 prefixlen 64 scopeid 0x20<link>
inet6 fec0::ce16:adb:3e70:3e71 prefixlen 64 scopeid 0x40<site>
ether 52:54:00:12:34:56 txqueuelen 1000 (Ethernet)
RX packets 22 bytes 4043 (3.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 57 bytes 6823 (6.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2 bytes 78 (78.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2 bytes 78 (78.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
benshushu:proc# cd /sys/class/thermal/
benshushu:thermal# find .
.
//注：没有找到i2c工具
