I just upgraded my Macbook Pro to OS 10.13 High Sierra yesterday. After upgrading, I could not run Outlook 2016 any more. I got this message: You can't use this version of the application "Microsoft…
How to Use iptables on Red Hat Linux…
Just helped set up a Red Hat Enterprise Linux 7 server. The firewall is handled by firewalld on rhel 7 by default. To use your old iptables rules, you have to disable firewalld and enable…
Installing Ubuntu 16.10 on an Inspiron 15 7559…
I tried to install Ubuntu 16.10 on an Inspiron 15 7559 laptop per my user's request. I ran into a lot of troubles and I didn't know why initially and wasted a lot of time.…
Rocks 6.1.1 Node Installation Stops at Language Selection…
We have a Linux cluster running Rocks 6.1.1 for several years. I recently got a report that the nodes were down. When I checked the nodes, they were all in installation mode and stuck at…
Samba Problem after Updating to 3.6.23-30
One CentOS 6 Linux server got the newest Samba 3.6.23-30 update last week. This is a critical update to fix the Badlock bug. After applying the update, we had some machines which could not connect to the…
How to Setup AFP Service on Scientific Linux…
I setup Samba service for a group of Mac users for file sharing. After a couple of months, the users are not satisfied with the performance and constant problems with permissions. I then setup AFP…
How to Stop systemd-tty-ask-password-agent Wall Message on Scientific…
I was trying a new way to setup my Linux machine for Enterprise authentication. I got it to work partially. There is a message which keeps popping up in terminal window: Broadcast message from [email protected]…
Rocks Cluster Node Installation Problem “Unable to read…
When I installed the first compute node in my Rocks cluster, the installation went smoothly and I didn't have any problems. However, I ran into a lot of problems when I installed the second node.…
How to Enable Debug Logging on CentOS 6.5
I have been doing a lot of works on machines running CentOS 6.5 lately. The debug logging was not enabled by default. Here is how to enable it. Use a text editor to edit this…
