Raspberry pi - Syntax error: operand expected "-"

[44ron]

Describe the bug runme.sh throws an error for line 246 The output of lscpu has "-" for Sockets on my device and this makes the script unable to use the output.

[...]

Device (please complete the following information):

• Type: Raspberry Pi 4B
• OS details: Raspberry Pi OS Lite
• Platform: arm64

[MRColorR]

hello and thank you for reaching out :) , could you please share the output of your lscpu command so we can think on how to write a general solution? on my Pi4 with Pi OS full (debian 11) it works as lscpu | awk '/^Socket\(s\)/{ print $2 }' gives me a plain 1 as output. and mine lscpu output is like:

lscpu
Architecture:                    aarch64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
CPU(s):                          4
On-line CPU(s) list:             0-3
Thread(s) per core:              1
Core(s) per socket:              4
Socket(s):                       1
Vendor ID:                       ARM

So could you also share the output of these comamnds too?:

• lscpu | awk '/^Socket\(s\)/{ print $2 }'
• lscpu | awk '/^Core\(s\) per socket/{ print $4 }'
• lscpu | awk '/^Thread\(s\) per core/{ print $4 }'

[44ron]

Sure. lscpu gives: $ lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Vendor ID: ARM Model name: Cortex-A72 Model: 3 Thread(s) per core: 1 Core(s) per cluster: 4 Socket(s): - Cluster(s): 1 Stepping: r0p3 CPU(s) scaling MHz: 100% CPU max MHz: 1500.0000 CPU min MHz: 400.0000 BogoMIPS: 108.00 Flags: fp asimd evtstrm crc32 cpuid Caches (sum of all): L1d: 128 KiB (4 instances) L1i: 192 KiB (4 instances) L2: 1 MiB (1 instance) Vulnerabilities: Gather data sampling: Not affected Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Mmio stale data: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Vulnerable Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Vulnerable Srbds: Not affected Tsx async abort: Not affected

lscpu | awk '/^Socket(s)/{ print $2 }' gives: -

lscpu | awk '/^Core(s) per socket/{ print $4 }' produces nothing.

lscpu | awk '/^Thread(s) per core/{ print $4 }' gives: 1

Since then I simply set the CPU_SOCKETS variable as 1 and CPU_CORES as 4 and it seems to work flawlessly.

[OlivierVerhoek]

Same issue here with RPi Zero 2 W (aarch64) giving - on Socket(s)

Extra info

~/money4band-main# lscpu
Architecture:            aarch64
  CPU op-mode(s):        32-bit, 64-bit
  Byte Order:            Little Endian
CPU(s):                  4
  On-line CPU(s) list:   0-3
Vendor ID:               ARM
  Model name:            Cortex-A53
    Model:               4
    Thread(s) per core:  1
    Core(s) per cluster: 4
    Socket(s):           -
    Cluster(s):          1
    Stepping:            r0p4
    CPU(s) scaling MHz:  78%
    CPU max MHz:         1000.0000
    CPU min MHz:         600.0000
    BogoMIPS:            38.40
    Flags:               fp asimd evtstrm crc32 cpuid
Caches (sum of all):     
  L1d:                   128 KiB (4 instances)
  L1i:                   128 KiB (4 instances)
  L2:                    512 KiB (1 instance)

[MRColorR]

it seems that lscpu output is not consistent among all the OS. Could you please try these two commands on your machine and post the outputs ? grep ^cpu\\scores /proc/cpuinfo | uniq | awk '{print $4}' and also try : lscpu -b -p=Core,Socket | grep -v '^#' | sort -u | wc -l

i do not want to use an utility like nproc or similar as some OS could not have it installed

another workaround could be an hardcoded check like: if ! [[ "$CPU_SOCKETS" =~ ^[0-9]+$ ]]; then CPU_SOCKETS=1 # Default to 1 if CPU_SOCKETS is not a number fi

i'll wait for your response and then we can decide which option is the best and most ubiquitous 👍

[44ron]

lscpu -b -p=Core,Socket | grep -v '^#' | sort -u | wc -l

This command prints 4, the first prints nothing

[MRColorR]

please try the new release and report back if the issue is resolved :) we moved to lscpu -b -p=Core,Socket | grep -v '^#' | sort -u | wc -l

[44ron]

please try the new release and report back if the issue is resolved :) we moved to lscpu -b -p=Core,Socket | grep -v '^#' | sort -u | wc -l

Yep, works perfectly, ty :)