Symbolic links in Linux is the same as creating a shortcut in Windows. Use the ln command to create symbolic links. I was a little confusing to me when I was learning about it. But, then I got it. After a walk in the new Long Island RR station at the Grand Central Terminal in …
Category Archives: Linux
Disable SELinux RedHat/Centos Server
To disable SELinux on RedHat/Centos server is an easy process. All we need is to edit a config file located here: Use your favorite text editor (I like vim) and edit the above file: Change the value to SELINUX=disabled Then, you must reboot your RedHat/Centos server in order for changes take effect: That’s all! Go …
Start Tomcat at boot time in Red Hat 8
The other day I installed a Tomcat server in Red Hat 8 for a client. The client had to reboot the server and couldn’t find a way to start it. I found a way to start Tomcat at boot time in Red Hat 8. As usual, I needed to go for a walk around New …
How to Configure SSH Server in Ubuntu
A client called me asking me to setup and configure SSH on a new Ubuntu server they got for a project. They needed the server to be accessed by a remote Web Developer they hired. After having a great cup of coffee Villa Sarchi varietal I decided to take on this one. Install SSH Server …
cp Command to Overwrite Without Confirmation
I’m used to running the cp command in Linux often. But, this time a client had an emergency and I needed to use the cp command to overwrite a directory in their Red Hat Linux box. I needed to login with root for this one. I needed to restore a directory to it’s original location …
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Change MariaDB Data Directory Location CentOS
A client asked me if I can help their WordPress developer configure a development Linux box. They created a separate partition and wanted to change their MariaDB Data Directory Location on their CentOS server. After taking a walk in New York City by the Madison Square Park I decided to put this tutorial together. There …
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Manage Linux Users with the passwd command
To manage Linux users with the passwd command is very handy and straight forward. After brewing a really good Colombian coffee at home from Finca La Camelia I decided to put this brief tutorial. passwd command options This option displays the status of a specific user. Example output: In the above example it shows that …
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Create a New Linux Superuser Admin User
The other day I had to add a sudo user in Linux. I have done this many times in Ubuntu/Debian Linux boxes, but forgot how to create a new Linux superuser in RedHat/CentOS/Fedora family. I created this quick review and maybe can help others. Create New Linux Superuser in Ubuntu/Debian Let’s do this using the …
Setup Apache Virtual Hosts on Red Hat 8
Last week a client asked me to setup a dev and production environments on their new Red Hat 8 box. I have setup Apache virtual hosts in Ubuntu in the past. I knew to setup Apache virtual hosts on Red Hat 8 should not be that difficult. This is when I decided to take a …
Reload Config Apache httpd Without Restarting Apache in Linux
I was not sure when a client asked me “How do I gracefully restart Apache on my Linux server?” This prompt me to brew another coffee at home and then find how to reload Apache httpd config without restarting Apache server. There are several methods for this depending on your Linux version: Using apachectl to …
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