file /usr/java/jdkxx/bin/java from install of jdkxx conflict解决方法

在centos7上使用rpm包安装jdk的时候,发生了这个问题。
情况是眼瞎,从oracle官网上下载了一个32位的rpm包,安装失败之后,又下了一个64的安装包,安装的时候就报错了。
原因是之前安装的32位包未卸载,安装的时候冲突了,卸载了就好。方法如下:
先查询之前安装的jdk名称,这里必须使用全名,我就给这个坑了:

> rpm -qa | grep jdk
> #得到jdk全名
> jdk1.8.0_121-1.8.0_121-fcs.i586
> #卸载32位的jdk
> rpm -e jdk1.8.0_121-1.8.0_121-fcs.i586
> #安装64位的jdk
> rpm -ivh jdk-8u121-linux-x64.rpm 
> #成功!
Traceback (most recent call last): File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 568, in _build_master ws.require(__requires__) File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 886, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 777, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.VersionConflict: (pip 21.2.4 (/usr/local/python3.10/lib/python3.10/site-packages), Requirement.parse('pip==20.0.2')) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/bin/pip", line 6, in <module> from pkg_resources import load_entry_point File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 3243, in <module> def _initialize_master_working_set(): File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 3226, in _call_aside f(*args, **kwargs) File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 3255, in _initialize_master_working_set working_set = WorkingSet._build_master() File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 570, in _build_master return cls._build_from_requirements(__requires__) File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 583, in _build_from_requirements dists = ws.resolve(reqs, Environment()) File "/usr/local/python3.10/lib/python3.10/site-packages/pkg_resources/__init__.py", line 772, in resolve raise DistributionNotFound(req, requirers) pkg_resources.DistributionNotFound: The 'pip==20.0.2' distribution was not found and is required by the application
07-23
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