Ubuntu下查看linux版本，内核版本，系统位数，gcc版本

1. 查看linux版本

leblancs@leblancs-virtual-machine:~$ cat /etc/issue
Ubuntu 16.10 \n \l

leblancs@leblancs-virtual-machine:~$

2. 查看内核版本
1)

leblancs@leblancs-virtual-machine:~$ cat /proc/version
Linux version 4.8.0-28-generic (buildd@lgw01-16) (gcc version 6.2.0 20161005 (Ubuntu 6.2.0-5ubuntu12) ) #30-Ubuntu SMP Fri Nov 11 14:03:52 UTC 2016
leblancs@leblancs-virtual-machine:~$

2) uname命令

leblancs@leblancs-virtual-machine:~$ uname -a
Linux leblancs-virtual-machine 4.8.0-28-generic #30-Ubuntu SMP Fri Nov 11 14:03:52 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
leblancs@leblancs-virtual-machine:~$

3）

leblancs@leblancs-virtual-machine:~$ uname --help
Usage: uname [OPTION]...
Print certain system information.  With no OPTION,same as -s.

  -a,--all                print all information,in the following order,except omit -p and -i if unknown:
  -s,--kernel-name        print the kernel name
  -n,--nodename           print the network node hostname
  -r,--kernel-release     print the kernel release
  -v,--kernel-version     print the kernel version
  -m,--machine            print the machine hardware name
  -p,--processor          print the processor type (non-portable)
  -i,--hardware-platform  print the hardware platform (non-portable)
  -o,--operating-system   print the operating system
      --help     display this help and exit
      --version  output version information and exit

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Full documentation at: <http://www.gnu.org/software/coreutils/uname>
or available locally via: info '(coreutils) uname invocation'
leblancs@leblancs-virtual-machine:~$

3.查看系统位数
1)

leblancs@leblancs-virtual-machine:~$ getconf WORD_BIT
32
leblancs@leblancs-virtual-machine:~$ getconf LONG_BIT
64
leblancs@leblancs-virtual-machine:~$

2)

leblancs@leblancs-virtual-machine:~$ file /bin/bash
/bin/bash: ELF 64-bit LSB executable,x86-64,version 1 (SYSV),dynamically linked,interpreter /lib64/ld-linux-x86-64.so.2,for GNU/Linux 2.6.32,BuildID[sha1]=6587b60b0a57e1a0f83f7523a658e0bf329fdb5f,stripped
leblancs@leblancs-virtual-machine:~$

4. 查看gcc版本

leblancs@leblancs-virtual-machine:~$ gcc --version
gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005
Copyright (C) 2016 Free Software Foundation,Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

leblancs@leblancs-virtual-machine:~$