====== Linux & misc. POSIX ======

Get info on the distro: 

System information: ''uname''

Network hostname: ''uname -n'', Kernel release: ''-r'' Machine hardware name: ''-m'', All info: ''-a''

CPU info: ''lscpu'' (adaptable to show PCI info, etc.)

Storage devices (aka "block devices"): ''lsblk'', all: ''-a''.

What is my OS?: ''lsb_release -a''

32-bit or 64-bit of operating system? ''getconf LONG_BIT''

**D**isk **F**ree: ''df -T'' shows available filesystem types, ''df -BG'' shows available space

32-bit or 64-bit of **ext4**?

''tune2fs -l /dev/mapper/data-data | grep 'Filesystem features' ''
Example output of 64-bit: 

''Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize''