fuzzi's questions

My goal is to get SSL running on my server to run over HTTPS. I'm trying to run the command sudo certbot --apache to generate a certificate for my server as part of these steps https://certbot.eff.org/lets-encrypt/ubuntutrusty-apache.

I'm having issues with this, as when I run the command I get the error

Error while running apache2ctl graceful.
httpd not running, trying to start
Action 'graceful' failed.
Address already in use: AH00072: make_sock: could not bind to address [::]:80

When I check what is running on port 80, I see httpd.bin.

tcp6       0      0 :::80                   :::*                    LISTEN      1372/httpd.bin

But httpd.bin is said to not be running in the error message above. I have tried to kill the process running on port 80, but have been unable to. I've also tried to locate the PID of the Apache parent process (http://www.informit.com/articles/article.aspx?p=26130&seqNum=3) however, I do not have /acpache directory in usr/local.

How should I proceed with killing the process? - Should I be focusing on killing this process, or is there another way around this issue?

The other confusing thing is that when I run sudo service apache2 status the result is apache2 is not running but I cannot start this process either as port 80 is in use (not sure if Apache2 is required in my scenario.)

Any help would be greatly appreciated!

I've been trying to update the permissions so that I can run a command (specificially dotnet restore). I'm not sure if this issue is specific to running dotnet, or if it is more generic.

I can run the command using sudo dotnet restore, however I want to be able to run this command without sudo. This is because I want to execute these commands via a CI tool (Jenkins), and I don't want that tool to have access to root commands. . The Jenkins user is unable to run dotnet restore (because of the errors below) or sudo dotnet restore (because it doesn't have root access).

When I run without sudo, I have the following errors from dotnet restore:

/usr/share/dotnet/sdk/2.1.104/NuGet.targets(104,5): error : Access to the path '/{file_path_to_project.csproj}/obj' is denied. 
[{file_path_to_project.csproj}]
/usr/share/dotnet/sdk/2.1.104/NuGet.targets(104,5): error :   Permission denied [{file_path_to_project.csproj}]

I've been trying to update the read and write permissions for my user on the /usr/share/dotnet/sdk/2.1.104/NuGet.targets file, and the {file_path_to_project.csproj} directory, but so far I still get the same errors. Does it have something to do with the /obj directory? – When I run ls the obj file is not shown.

How can I update the permissions so that I can access these files without running sudo?

I created a /etc/sudoers.d/dotnet file to see if it would enable dotnet to be run without needing to call sudo. I added the following contents: {myusername} {myhostname} = (root) NOPASSWD: /usr/bin/dotnet. However, this still required me to run sudo before dotnet restore to get the correct output.

I would like to download, then install a .exe file from a URL via the command line via wget or curl. Specifically MS Build Tools 2015 (https://www.microsoft.com/en-us/download/confirmation.aspx?id=48159) .

I understand that I cannot install a .exe through Ubuntu, and must install wine to do so. https://help.ubuntu.com/community/Wine (Please let me know if anyone has any other recommendations.)

How would I go about downloading the .exe file from the given URL?

Any help would be greatly appreciated!