Tag Archives: Ubuntu

How to change max open files for nginx server on Ubuntu

The following error occurred a lot in /var/log/nginx/error.log: Too many open files This means that the nginx master process reached the maximum number of open files which was set to the default of 4096. (To check it, simply cat /proc/pid/limits, … Continue reading

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Fix icon and text size for hidpi displays on login screen in KDE on Ubuntu 19.04

Just create/edit the file /etc/sddm.conf and add the following: [X11] EnableHiDPI=true ServerArguments=-nolisten tcp -dpi 192 Reboot, and you’re good to go, Enjoy! Sources: https://www.reddit.com/r/kde/comments/amybg5/login_screen_on_hidpi_4k_screen/

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Reset your Ubuntu Desktop to its default settings

dconf reset -f / Sources: https://www.omgubuntu.co.uk/2017/10/how-to-reset-ubuntu-desktop-to-default

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How to check the DHCP server on Ubuntu

This is if you need to know which server gave you your dynamic IP: cat /var/lib/dhcp/dhclient.leases That’s it, Enjoy!

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Print a batch of files on Ubuntu 18.10

Here we will send a batch of files inside a directory to the default printer in Ubuntu. First of all, you’d better define a default printer in your system by going to Printers and then select Use Printer by Default: … Continue reading

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Touchpad enable/disable script and shortcut on Ubuntu 18.10

If your laptop doesn’t have a working switch for turning on/off your touchpad, then this post is for you. Create a script called disenable_touchpad.sh and add the following code to it: !/bin/bash state=$( gsettings get org.gnome.desktop.peripherals.touchpad send-events ) if [ … Continue reading

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Fix QT Apps scaling issue on hidpi screens on Ubuntu

On my 5k screen, all QT apps look very tiny, such as keepassxc and Virtualbox. The best solution I found was adding the following to your .profile to autoscale at a ratio of 2 (you can change it to your … Continue reading

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