With windows 10 you can now check MD5 and other hashed on de default commandline:
CertUtil -hashfile <path to file> MD5
or
CertUtil -hashfile <path to file> SHA256
Slow SSD perfomance with ESXi 6.5 and older AHCI controllers
ESXi 6.5 includes a new native driver (vmw_ahci) for SATA AHCI controllers, but that introduces performance problems with a lot of controllers and/or disks.
Try to disable the native driver and revert to the older sata-ahci driver by running
esxcli system module set --enabled=false --module=vmw_ahci
Reboot the server after changing it and your performance should be OK again.
find files before specific date in linux and move them to another directory
find -not -newermt "nov 01, 2015" -exec mv {} /tmp \;
-not -newermt -> specifies the modification time of the file must be older (hence the -not)
Find linux listen ports short list
Use netstat:
netstat -tulpn
Or use ss:
TCP ports:
ss -tan
UDP ports:
ss -uan
where the last n is for nummeric.
Add the p to show which process is using the port
Find UUID, volume name and mountpoint from CLI in ESX5.x
To get a list of mounted storage execute the following command on the cli of an ESX5.x host:
esxcli storage filesystem list
Determine the NIC firmware and driver version for ESXi 5.5
In ESXi 5.1 you could use the command ethtool -i vmnicX to get the firmware and driver version for the Network interface card. In 5.5 you get an error: Can not get control fd: No such file or directory.
To get the firmware and driver version use the following command in 5.5:
esxcli network nic get -n vmnicX
To get a list of nics:
esxcli network nic list
Cisco Nexus 1000v promiscious mode
On a Cisco Nexus 1000v port-group you can enable promiscious mode on a port-group:
no mac auto-static-learn
This can come in handy for Loadballancing purposes.
Mail.app on OSX shows an overlapping address
When the mail.app in OSX shows the email address from a sender overlapping the to: of from: fields delete the font cache. It worked for me.
sudo atsutil databases -remove
Outlook 2013 doesn’t show “New” task in taskbar
It seems to be a bug in Outlook 2013: It doesn’t show the “New email” or “New …” when you right click on the taskbar.
To solve this do the following:
- Unpin the Outlook 2013 icon from the Taskbar.
- Exit Outlook.
- Delete the following registry key: HKCU\Software\Microsoft\Office\15.0\Outlook\Setup
- Open Outlook again and re-pin the icon.
Enable certificates < 1024
Certutil -setreg chain\minRSAPubKeyBitLength 512