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updates

OpenVPN server: how to tell if server is listening/working?

I'm trying to set up an OpenVPN server on an EC2 instance. There doesn't seem to be any Ubuntu documentation for OpenVPN, so I'm mostly fol...

Published: Jul 29, 2026

general

Unable to set 100hz refresh rate on a ultrawide gaming monitor

I am trying to set the refresh rate of my monitor (Xiaomi Mi Curved Gaming Monitor. 3440 x 1440 native resolution) to 100 Hz on Ubuntu 20.04. As shown on ...

Published: Jul 29, 2026

updates

How to change keyboard backlight color from blue to white in Dell G3 15 laptop

I recently bought Dell G3 15 Laptop from flipkart. The specifications says RGB Backlit Keyboard. But by default, the color is blue. How can I change the c...

Published: Jul 29, 2026

news

How do I fix broken LibreOffice packages

I have "broken packages" but when I attempt to fix them in Synaptic Package Manager, I get this error message: dpkg: unrecoverable fatal error, aborting: ...

Published: Jul 29, 2026

updates

Why did the command uniq -c put a whitespace at the beginning?

I have this code in a shell script: sort input | uniq -c | sort -nr > output The input file had no preceding white spaces, but the output does. How do ...

Published: Jul 29, 2026

news

Extending formulas to a large number of rows in a column

I have an Excel sheet with one of the columns having around 25000 entries. Now, I create a new sheet – say Sheet2 – and I have a simple formula like this ...

Published: Jul 29, 2026

news

How to find out on which port mongo is?

I know that default mongo port is 27017 and I can connect to this instance on such port. But I tried to figure it out by other means. I found that mongo i...

Published: Jul 29, 2026

updates

Prevent Windows Key from Opening Start Menu in Windows 7

I'd like to be able to stop the Windows Key from activating the Start Menu on Windows 7. I don't want to disable the Windows Key completely. I&#...

Published: Jul 29, 2026

general

How can I enable ip_forward in Android?

I'm testing arp spoofing on phone but it's not working. ARP is changed on my PC but after it i can't ping any website. I did this on phone:...

Published: Jul 29, 2026

news

What is the purpose of cd ` (backtick)?

The following behaves the same in Fedora and CentOS. cd mydirectory works. cd notadirectory works (gets an error from Bash). However, cd ` gives me some s...

Published: Jul 29, 2026

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