add dpi post

content/post/change-dpi-in-linux-using-command-line.md

@@ -0,0 +1,68 @@
+---
+title: "Change DPI in Linux using command line"
+date: 2021-11-10T09:48:47Z
+lastmod: 2022-04-29T09:48:47Z
+draft: false 
+keywords: [dpi linux]
+description: ""
+tags: [dpi]
+categories: [linux]
+author: ""
+
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+---
+
+Using a DE is pretty straightforward but you might be out of luck if you use something like dwm.
+<!--more-->
+Find correct DPI of your display currently used by X server
+```bash
+xdpyinfo | grep -B2 resolution
+```
+
+This si probably the correct value. If not, you can calculate it by converting your screen size to inches and dividing the resolution by display length.
+```bash
+xrandr | grep -w connected
+```
+
+{{% center %}}
+{{% figure src="/img/xrandr.png" title="The output on my machine" alt="Output of the last command" %}}
+{{% /center %}}
+
+The above block spits your screen resolution and physical size. Now divide it by display length in inches.
+
+Create/modify the file `~/.Xresources` and append the following line (replace 96 with your DPI)
+```
+Xft.dpi: 96
+```
+and have it processed by the startup file (like .xinitrc)
+```
+xrdb -merge ~/.Xresources
+```