查看centos 版本
1. [server@dv02 etc]$ cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
2. [server@dv02 etc]$ cat /proc/version
Linux version 3.10.0-957.5.1.el7.x86_64
(mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat
4.8.5-36) (GCC) ) #1 SMP Fri Feb 1 14:54:57 UTC 2019
3. [server@dv02 etc]$ uname
Linux
[anue@dv102 etc]$ uname -r
3.10.0-957.5.1.el7.x86_64
[server@dv02 etc]$ uname -a
Linux dv102 3.10.0-957.5.1.el7.x86_64 #1
SMP Fri Feb 1 14:54:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
4.[server@dv02 etc]$ rpm -q centos-release
centos-release-7-6.1810.2.el7.centos.x86_64
查看java 版本
1. [server@dv02 etc]$ java -version
openjdk version "11.0.1"
2018-10-16 LTS
OpenJDK Runtime Environment 18.9 (build
11.0.1+13-LTS)
OpenJDK 64-Bit Server VM 18.9 (build
11.0.1+13-LTS, mixed mode, sharing)
2. [server@dv02 etc]$ which java
/usr/bin/java
3. [server@dv02 etc]$ echo $PATH
/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/anue/.local/bin:/home/anue/bin
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