Working code

These files update.pl, server.bash and builstable.bash are working scripts that are actively used by me. Therefore, I feel they are ready to be added here.

buildstable.bash

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+#!/bin/bash
+# wget https://github.com/minetest/minetest/archive/master.tar.gz
+wget https://github.com/minetest/minetest/archive/refs/tags/5.6.1.tar.gz
+tar xf 5.6.1.tar.gz 
+cd minetest-5.6.1
+cd games/
+wget https://github.com/minetest/minetest_game/archive/master.tar.gz
+tar xf master.tar.gz
+mv minetest_game-master minetest_game
+cd ..
+cd lib/
+wget https://github.com/minetest/irrlicht/archive/master.tar.gz
+tar xf master.tar.gz
+mv irrlicht-master irrlichtmt
+cd ..
+cmake . -DRUN_IN_PLACE=TRUE -DBUILD_SERVER=TRUE -DBUILD_CLIENT=FALSE
+make -j$(nproc)

server.bash

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+#!/bin/bash
+
+# script to start and stop minetest server
+
+
+if [[ $1 == "start" ]] 
+then
+	echo "STARTING"
+        /home/kake26/minetest-5.6.1/bin/minetestserver --quiet --logfile /home/kake26/minetest/minetest.log --config /home/kake26/minetest/conf/minetest.conf --world /home/kake26/minetest/minetest-server/.minetest/worlds/world2/  &
+        pid=$!
+        echo $pid > /home/kake26/minetest/mintest.pid
+fi
+
+if pidof minetestserver  
+then
+   # Horribly cheap but works
+   echo "OK"
+else
+   # Seriously why not
+   /home/kake26/minetest-5.6.1/bin/minetestserver --quiet --logfile /home/kake26/minetest/minetest.log --config /home/kake26/minetest/conf/minetest.conf --world /home/kake26/minetest/minetest-server/.minetest/worlds/world2/  &
+fi
+
+if [[ $1 == "stop" ]]
+then
+	echo "STOPING"
+        $(pidof minetestserver | xargs kill -s INT)
+fi
+exit 0
+

update.pl

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+#!/usr/bin/perl
+
+# This was a bash script until I determined the level of invoking the ancient gods of the console required to make 
+# that work would be just too much
+
+use Storable; 
+#use Data::Dumper;
+
+# I know declaring a empty hash is 100% unnessecary but I am anyway
+%conf = {}; # this will be stored used to keep track of stuff
+
+$updfile = "index.json"; # I could use JSON here, but it might be easier to abuse jq
+$updlsturl = "https://content.minetest.net/api/packages/"; # give use a json file of everything available
+$modpath = "/home/kake26/.minetest/mods/"; # where your server stores its mods
+
+sub chk_update () {
+
+print "Checking for updates...\n";    
+
+foreach my $key (keys %{ $conf->{"mods"}}) { # the fing arrow -> sigh could have saved so much time
+
+    print "Checking mod $key \n";
+
+    # So we can now check against index2.json 
+    
+    $author2 = `jq -c '.[] | select(.name =="$key") | .author' index2.json`;
+    $author2 =~ s/\"//g;
+    
+    $release2 = `jq -c '.[] | select(.name =="$key") | .release' index2.json`;
+    $release2 =~ s/\"//g;
+
+    chomp($author2);
+    chomp($release2);
+
+    if ($conf->{"mods"}{$key}{"release"} != $release2) {
+        print "Mod $key current release: " . $release2 . " installed: " . $conf->{"mods"}{$key}{"release"} ."!\n";
+        # we should trigger the updater here
+        
+        &do_update($key,$release2,$author2);
+    }else{
+        print "Mod $key up to date\n";
+    }
+
+}
+}
+
+sub get_ready (){
+$mods = `find $modpath -type d -maxdepth 1 -print`; # -print is there for a reason, find saved a huge amount of time
+@mods = split("\n",$mods);
+foreach(@mods){
+    @tmods = split("\/",$_);
+    $tmname = pop(@tmods);
+    if ($tmname eq "mods"){
+        next;
+    }
+    # At this point we should have a mod's name
+    $author = `jq -c '.[] | select(.name =="$tmname") | .author' index.json`; #jq is a time saver
+    $author =~ s/\"//g;
+    chomp($author);
+    $release = `jq -c '.[] | select(.name =="$tmname") | .release' index.json`;
+    $release =~ s/\"//g;
+    chomp($release);
+    $conf{"mods"}{$tmname}{"author"} = $author;
+    $conf{"mods"}{$tmname}{"release"} = $release;
+}
+store \%conf, 'mods';
+return;
+}
+
+sub get_file () {
+# get the 
+system("wget -O index2.json $updlsturl");
+return;
+}
+
+sub do_update ($mod,$ver,$author) {
+# https://content.minetest.net/packages/TenPlus1/mob_horse/download/
+# https://content.minetest.net/packages/jp/i3/releases/14157/download/
+   $mod = $_[0];
+   $ver = $_[1];
+   $author = $_[2];
+ 
+   system("wget -O $mod.zip https://content.minetest.net/packages/$author/$mod/releases/$ver/download/");
+   system("unzip -o $mod.zip");
+   # print "Update info $mod $ver $author\n";
+}
+
+# Maybe get ready and check update should be called every time
+
+if (-e "mods"){
+    # load data
+    print "Loading data\n";
+    $conf = retrieve('mods');
+    chk_update();
+}else{
+    get_ready();
+    # chk_update expects a hash retrived from storables so program needs to be run again after this
+    #chk_update();
+}