Hardware Infos : "Mon pi, c'est quel modèle ?"

Simplement:

$ cat /proc/device-tree/model 

Qui renvoi pour un Raspberry 3 par exemple:

Raspberry Pi 3 Model B Rev 1.2 

Ou bien pour un modèle 1:

Raspberry Pi Model B Plus Rev 1.2

Ou plus complètement:

$ cat /proc/cpuinfo

Résultat pour un Pi 1 B+ :
processor : 0
model name : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7

Hardware : BCM2835
Revision : 1000010
Serial : 00000000cf77fa3f


Résultat pour un Pi 2 B+ :

processor : 0
model name : ARMv7 Processor rev 5 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc07
CPU revision : 5

processor : 1
model name : ARMv7 Processor rev 5 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc07
CPU revision : 5

processor : 2
model name : ARMv7 Processor rev 5 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc07
CPU revision : 5

processor : 3
model name : ARMv7 Processor rev 5 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xc07
CPU revision : 5

Hardware : BCM2835
Revision : a01041
Serial : 000000007c221d8e

La mémoire

$ cat /proc/meminfo

Résultat pour un Pi 1 B+ :

MemTotal:         444520 kB
MemFree:          272864 kB
MemAvailable:     355836 kB
Buffers:           16764 kB
Cached:           111744 kB
SwapCached:            0 kB
Active:            93280 kB
Inactive:          57716 kB
Active(anon):      22996 kB
Inactive(anon):     3068 kB
Active(file):      70284 kB
Inactive(file):    54648 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:        102396 kB
SwapFree:         102396 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:         22496 kB
Mapped:            42008 kB
Shmem:              3584 kB
Slab:              12300 kB
SReclaimable:       6192 kB
SUnreclaim:         6108 kB
KernelStack:         856 kB
PageTables:         1388 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:      324656 kB
Committed_AS:     137392 kB
VmallocTotal:     573440 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
CmaTotal:           8192 kB
CmaFree:            6292 kB
 

Résultat pour un Pi 2 B+ :

MemTotal:         999816 kB
MemFree:          100960 kB
MemAvailable:     852712 kB
Buffers:          471284 kB
Cached:           336984 kB
SwapCached:            0 kB
Active:           116760 kB
Inactive:         727444 kB
Active(anon):      24672 kB
Inactive(anon):    29736 kB
Active(file):      92088 kB
Inactive(file):   697708 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       2385912 kB
SwapFree:        2385852 kB
Dirty:                48 kB
Writeback:             0 kB
AnonPages:         35932 kB
Mapped:            23548 kB
Shmem:             18428 kB
Slab:              24580 kB
SReclaimable:      14020 kB
SUnreclaim:        10560 kB
KernelStack:        1088 kB
PageTables:         1400 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     2885820 kB
Committed_AS:     246348 kB
VmallocTotal:    1064960 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
CmaTotal:         262144 kB
CmaFree:           73108 kB

à L'oeil