Change apt source (Ubuntu 14.04)
If sudo apt-get update
command failed like this:
W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty/InRelease-- W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease-- W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty-backports/InRelease-- W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Unable to connect to jp.archive.ubuntu.com:http: W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Unable to connect to jp.archive.ubuntu.com:http: W: Failed to fetch http://jp.archive.ubuntu.com/ubuntu/dists/trusty-backports/Release.gpg Unable to connect to jp.archive.ubuntu.com:http: W: Some index files failed to download. They have been ignored, or old ones used instead.
You should change apt source!
If you live in Japan region, change from //jp.archive.ubuntu/com
from //ftp.jaist.ac.jp
Input this command
sudo sed -i".bak" -e 's/\/\/jp.archive.ubuntu.com/\/\/ftp.jaist.ac.jp/g' /etc/apt/sources.list
You can now update
and upgrade
faster than before!
- Reference: pc.casey.jp