Lack of Potatoes

Upgrade Ubuntu LTS versions

Run the update command to refresh the repos: sudo apt update Pull any upgradeable packages: apt list --upgradable Install any outstanding updates: sudo apt upgrade -y Reboot server so its clean: sudo reboot Once the server is back up run the above again to catch any additional entries. Snapshot/backup

Linux

Alias commands in Ubuntu

To create alias commands you need to edit this file: sudo nano ~/.bash_aliases Enter a command in the style of: alias new_name='old_command' For example: alias install='sudo apt-get install'

GPO

Increase PST/OST File size in Outlook

By default these limits are 50GB. To increase these to 100GB modify/create a GPO to set the following values: User Configuration-> Administrative Templates-> Microsoft Outlook -> Miscellaneous-> PST Settings The following 2 settings need to be modified: - Large PST: Absolute maximum size: 100000 -

Linux

Extend the LVM space

Resize partition: sudo cfdisk Select the physical volume and resize and write before you exit. Extend PV physical volume: sudo pvresize /dev/sda3 Find the logical volume (LV Path): sudo lvdisplay Extend logical volume: lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv Get the name your LVM path: (e.g. /dev/

raspberry pi

Run a Script at Boot on a Raspberry Pi

Edit your crontab list: sudo crontab -e Select your preferred editor (if you are prompted). Then add the following file at the bottom: @reboot python /home/usera/myscript.py Make sure the script is executable: sudo chmod a+x /home/usera/myscript.py

vCenter

Resetting root password in vCenter Server Appliance

Take a snapshot or backup of the vCenter Server Appliance before proceeding. Note: If the vCenter Appliance is on the same ESXi hosts it manages. Connect directly to the ESXi host that it is located on to perform these steps. Reboot the vCenter Server Appliance. After the VCSA Photon OS

vCenter

Stop vCenter Root Password Expiring

How to change the settings of password expiration policy: 1. Connect to the Port 5480 of your appliance and sign in as root. 2. Go to the menu Administrator of your appliance. 3. In the Password expiration settings section, click Edit and select the password expiration policy. 4. In the

PiKVM

Activate LCD: rw systemctl enable --now kvmd-oled kvmd-oled-reboot kvmd-oled-shutdown systemctl enable --now kvmd-fan ro To view the output outside of the OS we need to press the Fn+F8 ikey (on Dell laptops) to receive output from the HDMI connection. To resolve issues in BIOS screens (at least with Dell

SSH Keys stop user prompting for SUDO

You can add the user to the sudoers list to prevent the user from prompting for elevation (standard access or when using SSH keys). Run the command: sudo visudo At the VERY end of the file, enter the following (replacing user1 with your username): user1 ALL=NOPASSWD: ALL

Windows

Remove default APPX apps (Windows 10)

List of default apps that can/should be removed. 3D Environment: Get-appxpackage -allusers *Microsoft.3dbuilder* | Remove-AppxPackage Get-appxpackage -allusers *Microsoft3DViewer* | Remove-AppxPackage Microsoft Defaults: Get-appxpackage -allusers *king.com.CandyCrushSodaSaga* | Remove-AppxPackage Get-appxpackage -allusers *Microsoft.WindowsFeedbackHub* | Remove-AppxPackage Get-appxpackage -allusers *Microsoft.ZuneMusic* | Remove-AppxPackage Get-appxpackage -allusers *Microsoft.BingNews* | Re

Windows

Hardening OS (Windows 10 non-domain)

Options to set: * Disabling WDigest credentials caching. More info here: https://www.stigviewer.com/stig/windows_10/2017-02-21/finding/V-71763" * Disable AutoLogin * Enable always install elevated * Check is WSUS is using HTTP over HTTPS * Stop Service: SSDP * Disable SMB version 1 * Enabled SMB version 3 * Enabled SMB signing * Blocking

PowerShell

Extract the Immutable ID for an Office 365 user

There are many reasons why you may need this value and in my case its for Okta. Connect to O365 and substitute the username for the user required: Get-MsolUser -UserPrincipalName "username@domain.com" | Select-Object ImmutableID

Linux

Failed to fetch when using apt-update (404 not found)

If you have let slip your patching routine with Ubuntu you can find yourself in a position where you can't get any updates or upgrade to the next release. Backup your existing sources.list file: sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup Update the

Windows

Set MTU value for Windows 10

Open your terminal of choice and list the interfaces available: netsh interface ipv4 show subinterfaces Looking at the list find the name of the interface you want. In my example its Ethernet0: netsh interface ipv4 set subinterface "Ethernet0" mtu=9000 store=persistent The default MTU value should usually

Palo Alto

Force a failover from Active to Passive on Palo Alto firewalls

From the CLI: request high-availability state suspend From the GUI: Device > High Availability > Operational Commands – click Suspend local device Don't forget to enable the device again otherwise it won't be in the HA pool.

Linux

Network configuration from CLI

Find the interface you want using either command: netstat -i ifconfig Update the interface with your config (in this example eth0): sudo ifconfig eth0 10.1.1.6 netmask 255.255.255.0 Now set the default gateway using the following command (same interface as before): sudo route add default

raspberry pi

Chromium kiosk mode on raspberry pi

From the terminal (or SSH): mkdir /home/pi/.config/autostart Create the config file and enter the following: nano /home/pi/.config/autostart/kiosk.desktop [Desktop Entry] Type=Application Name=Kiosk Exec=/home/pi/kiosk.sh X-GNOME-Autostart-enabled=true Create the script the Pi will run at start-up: nano /home/pi/

Dell Featured

Access Dell iDRAC using SSH

Connect to the iDRAC IP using an SSH client and login using the username and password of the iDRAC console. To soft reboot the server the iDRAC is connected to just run the following commands: /admin1->cd system1 /admin1->reset If you have issues with the web console

Office365

Litigation Hold - Recoverable Items quota

Placing a mailbox on an indefinite hold means that mail items meeting the hold requirements will never be removed from the mailbox. This can result in the mailbox exceeding the Recoverable Items Quota, which could make the mailbox unusable or have strange errors (getting meeting invites for example). Location of

ESX

Enabling maintenance mode via esxcli

In the odd occasion when you need to enable this function from the CLI: Enter maintenance mode: esxcli system maintenanceMode set --enable true Exit maintenance mode: esxcli system maintenanceMode set --enable false

Palo Alto

Accessing a new Palo Alto

Out of the factory the Management port is set to a static address of 192.168.1.1 Connecting your laptop and setting a manual IP on the same range allows you to access this interface. The default credentials are admin for both username and password. Once you log in,

APC

Reset an APC AP9630 / AP9631

Having had the web interface error out the management card of the APC device could not be rest using the GUI. Since breaking out a serial cable is too much hassle there is a handy reset function on the back of the card itself. Two types of resets are available:

Office365

Connect to Office365

If you haven't done this already you need to install the necessary modules: Install-Module MSOnline This is the snippet of code I usually run to quickly connect to O365. function Connect-O365 { $UserCredential = Get-Credential -UserName "username@domain.eu" -Message "Username has to be in the format

Apple

MacBook can access the internet but no webpages resolve

Fix issues with Mac not being able to resolve webpages.

Office365

Discrepancy in Outlook Desktop and OWA for Shared Mailboxes

If an incoming email is flagged with "Sensitivity: Private" then due to how Microsoft define permissions these emails won't be visible to all users in a shared mailbox. If you are not the owner of the mailbox then you need to do this via OWA. Select