I have CentOS7 installed on my computer. uname -a prints the following:
Linux c7 3.10.0-1127.el7.centos.plus.i686 #1 SMP Sun Apr 5 18:08:31 UTC 2020 i686 i686 i386 GNU/Linux
As stated in man uname page, uname -m denotes machine hardware name (i686 in my case), uname -p denotes processor type (i686 in my case) and uname -i denotes hardware platform (i386 in my case). I have been trying to find out what exactly every option means. After hours of searching I came to the conclusion that there are contradictions among given answers (even on StackExchange). As far as I understand, uname -m stands for what architecture the kernel was compiled for, therefore, in my case I have a Linux kernel which is build for i686 ISA (right?). But I have some misunderstanding about uname -p. People (and some docs) claim that it prints the ISA of the processor. I have i7-4800MQ, so uname -p should print something like x86_x64/amd64/x86-x64, but it prints i686. I think that it might be due to the reason that my CPU works in Legacy Mode (or so) using i686 ISA, since the distro is 32-bit (right?). The last option is uname -i which prints i386. I don't even have any assumptions about this one. I don't see any connection with i386 architecture in these conditions. Can someone clearly explain what does every parameter stand for in my case?
