Kernel data
/proc
/proc/cpuinfo
/proc/interrupts
/proc/meminfo
/proc/mounts
/proc/partitions
/proc/version
/etc/os-release
lsb_release -a
uname -a
==> i686 ==> 32-bit version of Linux.
==> x86_64 ==> 64-bit version of Linux.
uname -a -m -p
==> Linux shk-1.novalocal 4.1.3-100.fc21.x86_64 #1 SMP Wed Jul 29 18:59:46 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Devices
fdisk -l
lsblk