Linux system version query command

1. # uname －a (Linux view the current operating system kernel information of the version) 2. # cat / proc / version (Linux view the current operating system version information) 3. # cat / etc / issue or cat / etc / redhat- release ( Linux viewing version current operating system release information) 4, # cat / proc / cpuinfo (Linux viewing cpu related information, including model, main frequency, kernel information, etc.) 5 , # getconf LONG_BIT (Linux viewing version number) 6. lsb_release -a (CentOS 6.9 version requires lsb to be installed, and CentOS 7.0 and above can be used directly. All online saying that Linux supports it, I have only verified CentOS system)