Read More on SQL Server Installation on RHEL

• How to install SQL Server 2017 on RedHat Linux
• How to Install SQL Server on Redhat Linux without Internet – Offline Installation
• Install SQL Tools on RedHat Linux using Internet
• Install SQL Server Agent on RHEL
• Installing SQL tools on RHEL without Internet – Offline Installation

Uninstall SQL Tools on RHEL

As we know sqlcmd and bcp utilities are part of SQL tools so if you want to uninstall these utilities from red hat linux machine you need to uninstall SQL tools package mssql-tools. Follow below steps to uninstall sqlcmd utility from your redhat linux machine.

1- Connect to your RHEL server where SQL tools has been installed and running. Check whether SQL tools are installed on this machine or not by checking sqlcmd or bcp utilities. You can see RedHat Linux is recognizing sqlcmd utility that means SQL tools have been installed on this machine that needs to be uninstalled.

2- We can see sqlcmd utility in above screenshot. Now, we will uninstall SQL tools by running below command.

#Uninstall SQL tools from RHEL
sudo yum remove mssql-tools

You can see the details of SQL tools package that is going to be removed from this machine. We can see mssql-tools package is going to be removed here. Above command will ask us to type y to proceed with the uninstallation of this package mssql-tools and type N to quit this removal.

I entered y to uninstall SQL tools from this machine. This will uninstall both utilities sqlcmd and bcp. You can see SQL tools package mssql-tools has been removed from this machine post entering y in above screenshot.

3- Now, we can check sqlcmd or bcp utility again to validate this uninstallation. I typed sqlcmd as i did in first screenshot and pressed enter. Now we can see red hat linux is not recognizing sqlcmd utility, that means SQL tools have been removed from this machine.

#check sqlcmd utility post SQL tools uninstallation
sqlcmd

Here i have shown step by step process to uninstall SQL Tools sqlcmd and bcp from linux machine.

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SQL tools will be installed using mssql-tools package. The mssql-tools package contains two utilities:

• sqlcmd: Command-line query utility.
• bcp: Bulk import-export utility.

Before going ahead, we need Ubuntu server and SQL Server 2017 running on that instance. If you have no idea about installing Ubuntu server or SQL Server 2017 or creating a virtual machine where you can install Ubuntu and SQL Server then i would recommend you to read below articles.

• How to Create a Virtual Machine.
• How to Install Ubuntu on a virtual machine.

SQL Tools Installation on Ubuntu – ONLINE Method/Using Internet

Installing any package on Ubuntu Linux is straight forward method if our server has internet connection and able to access online repositories. But it becomes painful if your Ubuntu server has no access of internet. Below is the list of articles that you can use to learn offline method of SQL Server Installations on Ubuntu and RHEL.

• Install SQL Server on Ubuntu – Offline Method/Without Internet
• How to install SQL Server Agent on Ubuntu – Offline Method
• Installing SQL Tools on Ubuntu Server using Offline Method/Without Internet
• How to Install SQL Server on Redhat linux – Offline Method

Before moving ahead let’s check whether SQL Server is installed or not on this machine. Run below command to check the SQL Server service.

#Check SQL Tools
sqlcmd

#Check SQL Server Service
systemctl status mssql-server

We can see SQL Server is installed and running fine on this server but SQL tools are not installed because sqlcmd is not throwing any output.

Let’s start with importing public repository GPG keys to install sqlcmd and bcp. Run below curl command to import the keys.

curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

Now we will register Microsoft Ubuntu repository by running below commands.

curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list | sudo tee /etc/apt/sources.list.d/msprod.list

Next step is to update the source list by running given command.

sudo apt-get update 

Once you execute above command, a series of execution will start and update all source packages.

Once above command will be executed, we will run below command to install SQL tools with required unix package.

sudo apt-get install mssql-tools unixodbc-dev

You can see mssql-tools package is installed in below image.

Now you can go ahead and use sql tools. If you are facing any issue during accessing sqlcmd utility then you need to set path environment variable using below steps. Run below command to set the path environment variables. Ubuntu will not be able to recognize sqlcmd utility unless you set the path environment variable. Ubuntu is able to recognize sqlcmd utility once we set the path environment variables.

#To make sqlcmd/bcp accessible from the bash shell for login sessions, modify your PATH in the ~/.bash_profile file
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile

#To make sqlcmd/bcp accessible from the bash shell for interactive/non-login sessions, modify the PATH in the ~/.bashrc file
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
source ~/.bashrc

You can see, sqlcmd is recognized by ubuntu after setting path environment variable in below image.

Now connect to SQL Server instance using sqlcmd and run a command to validate this installation. I have checked the SQL Server version installed on ubuntu server. You can see the details in below image that SQL Server 2017 is installed on this Ubuntu server. Now we have done with SQL Tools installation on Ubuntu server.

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