How to allow a user to gain access to Ec2 user with a different PEM key

I currently have an EC2 machine that I access using my PEM key. The PEM key i use is shared across different EC2 instances. I now want to add an extra user and I would like to give that user a separate PEM key that would run on the same EC2. My question is how could I configure my EC2 to be accessible through my PEM key and another PEM key that I will give to the other user ?

Update a site column Display name using PnP, to allow me to use existing Display Name

I am working on sharepoint online classic team site and i created a new site column using the site columns UI, as follow:- enter image description here

where the site column gets its display name and internal name as “ResponsibilityCusomter”, and as i know that sharepoint allows us to create site columns with duplicate display names (as in our case we already have another site column with the display name =”Customer” and internal name=”ExternalCustomerName”), as long as they have different internal name. now i edit the above site column using the UI, and i changed its Name from “ResponsibilityCusomter” to “Customer”, but i got this error:-

enter image description here

so can anyone advice how i can change the display name for my site column? can i do so using PnP? as sharepoint should not mind if we have duplicate display name for the columns as long as they have different internal names.

Allow write access to second EFI partition from VirtualBox guest on Windows 10 host

Setting: The computer has two or more physical hard drives. One is entirely dedicated to a Linux installation, one entirely to Windows. Both can be booted up. The system is configured for EFI booting.

Windows is Windows 10 build 17763.379. Installed in Windows is Oracle VirtualBox (tried with 5.x and 6.x) with a Fedora guest that has raw full disk access to the disk dedicated to Fedora. Fedora can be booted in VirtualBox, as well, and operated without problem. Except when it comes to writing to the EFI partition of the Fedora disk.

Fedora will try to write to the EFI partition but the async write will be denied by the host, Windows. No amount of running VirtualBox as Administrator or using the System account changes this. No group policy setting seems to affect this and, as far as I can see, I’m the only one in the whole wide web that has asked this question.

How do I stop Windows from stopping write access to an unmounted EFI partition on a disk that is not used by Windows?

Note that this is a peculiarity of Windows 10. The setting worked perfectly under Windows 7.

Allow Office 2010 users to open docs from hyperlink in edit mode

I have SharePoint 2013 Designer Workflow which assigns tasks to users. In the email of the task I have added a direct link to the related document.

I was originally using [%Workflow Context:Current Site URL%][Workflow Context:Current Item URL%] as the hyperlink.

This was working fine for all users who had Microsoft Office 2013 installed. I ran into a problem when users with Microsoft Word 2010 clicked this link the document would open only in Read only mode – when they do have Edit rights on the document. The Enable Editing link was also not available.

I found a solution to add ms-word:ofe|u| to the hyperlink so now I’m using: ms-word:ofe|u|[%Workflow Context:Current Site URL%][Workflow Context:Current Item URL%] as the hyperlink. This is great in that it gets the document to Edit mode however it gives the user a Security Notice pop-up (for all users, including Word 2010, Word 2013, and including for the site collection administrators).

Here is a screenshot of the security warning: Security Notice

So then I found the following suggestion:

However it’s not working. People are still getting the Security Notice.

Any suggestions to avoid this security notice and just open the files in Edit mode from a hyperlink in an email?

How do give allow sshd permission to authorized_keys?

I am trying to set up SSHD on my server. I have placed authorized_keys in /root/.ssh.

Root is owned by root and has permission 500. .ssh is owned by root and has permission 700. authorized_keys is owned by root and has permission 600.

When I try to connect with WinSCP from laptop, it says “Server refused our keys.”.

To determine why it says this I looked at /var/log/secure. The logs at the time of attempting the ssh connection say this:

centos7 sshd[5828]: debug1: trying public key file /root/.ssh/authorized_keys centos7 sshd[5828]: debug1: Could not open authorized keys 'root/.ssh/authorized_keys': Permission denied 

From my understanding SSHD will be acting as root and should have to problem accessing authorized_keys. My question is same as this one on stackOverflow but the answer did not work.

Allow sendmail to accept messages from external servers

so I have the Sendmail SMTP server setup on Ubuntu 18.0.4. It does allow me to use the sendmail command within the server itself, but it appears if I use something like Thunderbird on my own local machine it denies it because “it cannot lookup my ip address”. I’m assuming this is because Sendmail is refusing to send messages from external sources, and is only allowing them to be sent from the server domain. Does anyone know how to allow it to accept requests from external machines?