For apt:
Navigate to the following folder as follows:
cd /etc/apt/apt.conf.d
Create a file called
10proxy:sudo nano 10proxy
Without authentication add this line:
Acquire::http::Proxy "http://proxyaddress:proxyport/";
Or with authentication add this line:
Acquire::http::Proxy "http://username:password@proxyaddress:proxyport/";
Make sure to include the
/ at the end.For everything else:
Edit this file:
sudo nano /etc/environment
Add this line (with authentication):
export http_proxy="http://username:password@proxyaddress:port/"
Or without authentication:
export http_proxy="http://proxyaddress:port/"
sudo HTTPS_PROXY=http://:@proxy:port rpi-update
Upgrade your Raspbian install from Jessie to Stretch.
Prepare
Get up to date.
$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get dist-upgrade
Verify nothing is wrong. Verify no errors are reported after each command. Fix as required (you’re on your own here!).
$ dpkg -C
$ apt-mark showhold
Optionally upgrade the firmware.
$ sudo rpi-update
Prepare apt-get
Update the sources to
apt-get. This replaces “jessie” with “stretch” in the repository locations giving apt-get access to the new version’s binaries.$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list
$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/raspi.list
Verify this caught them all. Run the following, expecting no output. If the command returns anything having previously run the
sedcommands above, it means more files may need tweaking. Run the sed command for each.$ grep -lnr jessie /etc/apt
Speed up subsequent steps by removing the list change package.
$ sudo apt-get remove apt-listchanges
Do the Upgrade
$ sudo apt-get update && sudo apt-get upgrade -y
$ sudo apt-get dist-upgrade -y
Cleanup old outdated packages.
$ sudo apt-get autoremove -y && sudo apt-get autoclean
Verify with
cat /etc/os-release.Update Firmware
You’ve come this far, might as well get the latest firmware.
$ sudo rpi-update 