How to get CPU info in C on Linux, such as number of cores? [duplicate]

Answer 1

You can use this for mostly all kind of linux distro

For C code

 num_cpus = sysconf( _SC_NPROCESSORS_ONLN );

(In QNX systems , you can use num_cpus = sysinfo_numcpu())

For shell scripting, you can use cat /proc/cpuinfo

or use lscpu or nproc commands in linux