First thing is to understand if you can even download the install script.
Run this command:
curl -L https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -o /dev/null ; echo $?
This will show any errors you have suppressed in your first command and discard the output received from GitHub.com
If you can’t get to that server on your network, you may need to try another or use a VPN. If that item is unreachable, perhaps get homebrew.sh to help install this? It has some other help but adds steps if you don’t need a package manager and just want this one item.
Here’s what success looks like for me with the above test:
me@m2 ~ % curl -L https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh -o /dev/null ; echo $?
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 18230 100 18230 0 0 84930 0 --:--:-- --:--:-- --:--:-- 84930
0
Once the script above works on a network, then you can try again your steps. Pay attention to the last number reported (It’s the 0 in my case, indicating no error in the curl), it’s your error code and also any warnings you see that I didn’t paste above that drive next steps….
