netselect-apt: add page (#4262)

pages/linux/netselect-apt.md

@@ -0,0 +1,20 @@
+# netselect-apt
+
+> Create a `sources.list` file for a Debian mirror with the lowest latency.
+> More information: <https://manpages.debian.org/buster/netselect-apt/netselect-apt.1.en.html>.
+
+- Create `sources.list` using the lowest latency server:
+
+`sudo netselect-apt`
+
+- Specify Debian branch, stable is used by default:
+
+`sudo netselect-apt {{testing}}`
+
+- Include non-free section:
+
+`sudo netselect-apt --non-free`
+
+- Specify a country for the mirror list lookup:
+
+`sudo netselect-apt -c {{India}}`