学习linux中遇到的问题,一些解决的办法

linux下yum命令出现Loaded plugins: fastestmirror

https://www.cnblogs.com/starof/p/4773209.html 

CentOS7 执行yum 命令出错

https://blog.csdn.net/zhousenshan/article/details/53140979

 

One of the configured repositories failed (Unknown),  
 and yum doesn't have enough cached data to continue. At this point the only  
 safe thing yum can do is fail. There are a few ways to work "fix" this:  
  
  
     1. Contact the upstream for the repository and get them to fix the problem.  
  
  
     2. Reconfigure the baseurl/etc. for the repository, to point to a working  
        upstream. This is most often useful if you are using a newer  
        distribution release than is supported by the repository (and the  
        packages for the previous distribution release still work).  
  
  
     3. Disable the repository, so yum won't use it by default. Yum will then  
        just ignore the repository until you permanently enable it again or use  
        --enablerepo for temporary usage:  
  
  
            yum-config-manager --disable   
  
  
     4. Configure the failing repository to be skipped, if it is unavailable.  
        Note that yum will try to contact the repo. when it runs most commands,  
        so will have to try and fail each time (and thus. yum will be be much  
        slower). If it is a very temporary problem though, this is often a nice  
        compromise:  
  
  
            yum-config-manager --save --setopt=.skip_if_unavailable=true  
  
  
Cannot find a valid baseurl for repo: base/7/x86_64 

linux中修改文字的编码格式

：是修改文字支持的，现在centos7改到 /etc/locate.conf 这儿了，换地方了

将其从UTF-8修改成GBK重现连接linux即可： 就可以显示中文文字