In this guide, I’ll walk you through the steps to install PowerShell Core on Ubuntu 18.04 LTS. PowerShell is a command-line shell and scripting language tool built on the .NET Framework. PowerShell allows System Administrators to perform task automation and configuration management.

PowerShell Core can be installed on Ubuntu 18.04 by using Microsoft Debian repository. Add the repository to your Ubuntu 18.04 system using the command below.

sudo update update && sudo apt -y install wget
wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb

A successful installation should have an output like below:

Selecting previously unselected package packages-microsoft-prod.
(Reading database ... 105206 files and directories currently installed.)
Preparing to unpack packages-microsoft-prod.deb ...
Unpacking packages-microsoft-prod (1.0-ubuntu18.04.1) ...
Setting up packages-microsoft-prod (1.0-ubuntu18.04.1) ...

Finally update Package index list and install PowerShell:

sudo apt update
sudo apt -y install powershell

To start PowerShell, use the command:

# pwsh
PowerShell 6.1.1

https://aka.ms/pscore6-docs
Type 'help' to get help.

PS /home/vagrant>

Test command execution:

PS /home/vagrant> Get-ChildItem / 

    Directory: /

Mode                LastWriteTime         Length Name
----                -------------         ------ ----
d-----         10/29/18  11:19 PM                bin
d-----         10/29/18  11:27 PM                boot
d-----         12/18/18   1:25 PM                dev
d-----         12/18/18   1:39 PM                etc
d-----         10/29/18  11:17 PM                home
d-----         10/29/18  11:21 PM                lib
d-----         10/29/18  11:12 PM                lib64
d-----         10/29/18  11:12 PM                lost+found
d-----         10/29/18  11:12 PM                media
d-----          7/24/18   7:51 PM                mnt
d-----         12/18/18   1:39 PM                opt
d-r---         12/18/18   1:25 PM                proc
d-----         12/18/18   1:40 PM                root
d-----         12/18/18   1:40 PM                run
d-----         10/29/18  11:21 PM                sbin
d-----         10/29/18  11:18 PM                snap
d-----          7/24/18   7:51 PM                srv
d-r---         12/18/18   1:25 PM                sys
d-----         12/18/18   1:40 PM                tmp
d-----         10/29/18  11:12 PM                usr
d-----         10/29/18  11:15 PM                var
-----l         10/29/18  11:21 PM             33 initrd.img
-----l         10/29/18  11:13 PM             33 initrd.img.old
-----l         10/29/18  11:21 PM             30 vmlinuz
-----l         10/29/18  11:13 PM             30 vmlinuz.old


PS /home/vagrant> dir

    Directory: /home/vagrant


Mode                LastWriteTime         Length Name
----                -------------         ------ ----
--r---           5/8/18   3:11 PM           2644 packages-microsoft-prod.deb


PS /home/vagrant>

That’s all. Read more about PowerShell  Administration.

Also check:

How to install Microsoft SQL Server 2019 on CentOS 7 / Fedora

How to install MS SQL on Ubuntu 18.04 LTS

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