sysconf(_SC_NPROCESSORS_ONLN) will not always return total number of CPUs

[samuelvenable]

I would investigate how lscpu does it on Linux by seeing its source code and whether it is exposed outside of the kernel for normal user access.

tinyfetch/src/tinyfetch.c

Line 443 in 3b8f4a1

return sysconf(_SC_NPROCESSORS_ONLN);

This command gets the desired information:

lscpu | grep 'CPU(s):' | uniq | cut -d' ' -f4- | awk 'NR==1{$1=$1;print}'

sysconf(_SC_NPROCESSORS_ONLN) gets the number of online CPUs, if any of them are offline then you will get a value you are not looking for.

I might fix this in a future PR when I have time. Just wanted to document this here for later.