HPE Switch 1920 - hidden CLI commands

Using a serial console with 38400,8,N,1

if you need a password:

Jinhua1920unauthorized

_cmdline-mode on

The command: _hidecmd open you a new level...

In case you can not log in to the web interface:

Give the following commands:

system-view

ip http enable

ip http port 80

ip http acl 2000

local-user admin

pasword <hereyournewpassword>

authorization-attribute level 3

quit

OTRS 6 POP3 suddenly stopps

In case your OTRS stopps fetching Mails from your Exchange Server:

Open  „Exchange Management Shell“ 

(Get-ServerComponentState -Identity NAMEOFYOURSERVER -Component PopProxy).LocalStates

Watch the brackets! 

In case you get „inactive“:

Set-ServerComponentState -Identity NAMEOFYOURSERVER -component PopProxy -state Active -requester HealthAPI

Parallels Desktop booting Problems

1. Turn Off Mac.
2. Hold CMD+R and start Mac.
3. Hold until the Mac boot into Recovery Mode.
4.  Go to Utilities -> Terminal 
5. Run the commands: csrutil disable press Enter Key then type reboot.

Sony Webcam SSL Support: how to create openssl P12 PKCS out of crt

In case you have a crt certificate including your key and you need a p12

openssl pkcs12 -export -in hereyourcertificate.crt -inkey hereyourkey.key -out yournewp12certificate.p12

Exchange Server 2013: how to display version numer

1. Open ExchangeManagementShell
2. Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersion

OTRS 6.0

Some quick hints on OTRS 6.0

MailQueue

cd /opt/otrs/bin

./otrs.Console.pl Maint::Email::MailQueue --list

MailQueue - Delete a specific Mail

./otrs.Console.pl Maint::Email::MailQueue --delete --filter ID::28

Sudo

You want to get ROOT the easy way?
Put your user in group sudo:

sudo usermod -aG sudo USERNAME

visudo

%sudo  ALL=(ALL) NOPASSWD:ALL