ubuntu conda 更新、下载模块包权限问题 'Permission denied'

转自http://blog.csdn.net/m0_37733057 http://blog.csdn.net/m0_37733057/article/details/77679714 用conda安装pytorch的时候，老是出现问题，后面使用conda安装其他软件时，提示conda需要更新，但是更新时，数据包能够下载下来，安装时就出现下类问题：Preparing transaction: done
Verifying transaction: done
Executing transaction: failed
ERROR conda.core.link:_execute(481): An error occurred while uninstalling package 'defaults::setuptools-38.4.0-py36_0'.
PermissionError(13, 'Permission denied')
Attempting to roll back.

Rolling back transaction: done

PermissionError(13, 'Permission denied')试很多方法之后，发现另一个博主的方法很有效，在这里推荐给大家：jiangmignzhi@jiangmignzhi-X555LB:~$ sudo chown -R marley:marley /home/marley/anaconda3 marley是自己的用户名，输入之后，敲击回车，我的问题就解决了

jiangmignzhi@jiangmignzhi-X555LB:~$ conda upgrade --allSolving environment: done

==> WARNING: A newer version of conda exists. <==
current version: 4.4.10
latest version: 4.4.11

Please update conda by running

$ conda update -n base conda

## Package Plan ##

environment location: /home/jiangmignzhi/anaconda3

The following packages will be UPDATED:

certifi:    2018.1.18-py36_0  defaults --> 2018.1.18-py36_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge setuptools: 38.4.0-py36_0     defaults --> 38.4.0-py36_0    https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge 
The following packages will be DOWNGRADED:

future:     0.16.0-py36_1     defaults --> 0.16.0-py36_0    https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge libffi:     3.2.1-hd88cf55_4  defaults --> 3.2.1-3          https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge tk:         8.6.7-hc745277_3  defaults --> 8.6.7-0          https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge xz:         5.2.3-h55aa19d_2  defaults --> 5.2.3-0          https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge zlib:       1.2.11-ha838bed_2 defaults --> 1.2.11-0         https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge 
Proceed ([y]/n)? y

Preparing transaction: done
Verifying transaction: done
Executing transaction: done

成功搞定！！！