ubuntu -- apt update error

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最近在一次ubuntu的例行apt更新中，竟然报错了；在一阵疯狂Google后，总算是解决了，现总结如下：

出现错误

尝试sudo apt update，输出如下错误：

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$ Err:17 http://ppa.launchpad.net/a-v-shkop/chromium/ubuntu bionic Release       
  404  Not Found [IP: 91.189.95.83 80]
Reading package lists... Done                      
E: The repository 'http://ppa.launchpad.net/a-v-shkop/chromium/ubuntu bionic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.

解决方案

根据错误提示，可知为ppa源问题，解决如下：

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sudo add-apt-repository -r http://ppa.launchpad.net/a-v-shkop/chromium/ubuntu

另外，网上还给出了额外的shell脚本解决方法

1.touch ppa-remove 新建一个文本

输入如下内容：

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#!/bin/bash
sudo rm /tmp/update.txt; tput setaf 6; echo "Initializing.. Please Wait" 
sudo apt-get update >> /tmp/update.txt 2>&1; awk '( /W:/ && /launchpad/ && /404/ ) { print substr($5,26) }' /tmp/update.txt > /tmp/awk.txt; awk -F '/' '{ print $1"/"$2 }' /tmp/awk.txt > /tmp/awk1.txt; sort -u /tmp/awk1.txt > /tmp/awk2.txt
tput sgr0
if [ -s /tmp/awk2.txt ]
then
  tput setaf 1
  printf "PPA's going to be removed\n%s\n" "$(cat /tmp/awk2.txt)"
  tput sgr0
  while read -r line; do echo "sudo add-apt-repository -r ppa:$line"; done < /tmp/awk2.txt > out
  bash out
else
  tput setaf 1
  echo "No PPA's to be removed"
  tput sgr0
fi

2.赋予文件执行权限

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sudo chmod +x ppa-remove

3.运行

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sudo ./ppa-remove