How to uninstall the PowerShell Module?

To uninstall a PowerShell module use the Uninstall-Module command. The module should not be in use to uninstall it.

To force uninstall a module run

To uninstall all versions of a module, use option -AllVersions

If you need to keep a version and uninstall all other versions, run


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ACME ( Free SSL Certificate

ACME ( is a shell script for generating LetsEncrypt SSL certificate. is written in bash, so it works on any Linux server without special requirements. For getting SSL, another popular option is to use certbot. To install, run

Set to use LetsEncrypt SSL (it support ZeroSSL also)

For SSL auto-renew, […]

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Where Mailwizz configuration file located?

Mailwizz configuration file located at

When you migrate a MailWizz installation, you need to update this file and change Database credentials. See Mailwizz […]

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How to backup PuTTY Settings

PuTTY is a very lightweight SSH Client software for the Windows Operating system. Sometimes you need to back up and restore Putty sessions (saved SSH connections) to another computer. Putty stores its settings and SSH sessions in Windows Registry. PuTTY settings are stored in Windows Registry at

To back up, the settings, run


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lxc storage list

To list Storage in LXD, use the command


In this installation, we use btrfs file system for storing containers. The file location is /var/snap/lxd/common/lxd/disks/default.img. It is used by 7 containers. See LXD […]

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lspci command is used to list PCI devices on your computer. To see all lspci command-line options

To list all PCI devices

To get detailed list

bash: lspci: command not found […]

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bash: lspci: command not found

On Ubuntu server, when I run lspci command, i get the error

To fix this error, install package pciutils

See lspci […]

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How to know you are inside a LXD container?

Identify LXD container

You have access to a virtual machine, you need to find out what virtualization technology it uses, you can install virt-what

Then run virt-what command, it will show what virtualization technology you are using.

Another way to find is using the command. If you use LXD container, you will see the following files/directories. […]

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How to check if running inside Docker?

To check if you are inside a docker container, run the command

If you get some result with docker in it, you are inside a docker container. Example See Docker […]

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