How to use psexec to remotely update machines time (from domain)?

In my previous posts you can find info how to install psexec. When you’re already done with this process, you can start updating clock settings on remote machines.

Set time

psexec64 -s /user:domain\user -i \\remote_ip net time \\domain_controller /set /y

Will output:

Bieżąca godzina na \\domain_controller to 2018-08-28 09:55:00.

At least in polish Windows 😀

Check time

psexec64 -s /user:domain\user -i \\remote_ip cmd /c time /t

Will output:


And remember good IT specialist is lazy specialist! Do not go anywhere! Eat ya buritos.

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How to change priority on Windows scheduled task using Powershell?

By default Windows setups task priority in scheduler to 7 (which is kinda low). The side effect of this is that for eg. backups are taking very long to take. In my case all databases were backed up in about 40-50 minutes…

Continue reading How to change priority on Windows scheduled task using Powershell?

How to find network device using it’s manufacturer name?

I’ve previously posted a note about finding Raspberry Pi without knowing it’s ip address. Well, basically it’s the same… Only you need to change MAC prefix to find other manufacturer. To wrap this is up, this is a command to find device by MAC prefix:

sudo nmap -sP | awk '/^Nmap/{ip=$NF}/00:D0:23/{print ip}'

And here you can find actual MAC information (use CTRL+F).

Of course you need Nmap to do that! And sudo is necessary!

Beware that sometimes there might be many prefixes for one manufacturer. Also check company name precisely, for example HP is Hewlett Packard but it also can be ProCurve Networking by HP.

PHP reading problem with files larger than 2 GB

If you’ll ever have problem with opening (fopen) and reading (fread) files larger than 2 GB in your PHP script. Check your version of scripting engine. In my case switching to 64 bit solved the problem. Please mind that this error is very hard to debug because PHP does not log anything (same as MS IIS) in such case. It simply resets client connection…