It's been almost a decade since I last tried running Rift on Linux. Back then, the experience was sluggish due to state of Direct X emulation.
However, I recently decided to give Rift another go, since it's now available on Steam via Proton. To my surprise, the performance was perfect! Steam has packaged the emulation so well that almost all of my games run smoothly.
What a difference a decade makes for gaming on Linux!
 |
| Running well on the potato APU |
I'm back to using Linux as a desktop for the umpteen time since the days of RedHat 5.2. This time it looks like I might just stick to it since it finally feels "right" as a desktop (most importantly my Windows games and apps runs under Wine).
This time Linux feels right as a desktop.
One of the first things after moving is to install Virtual machine manager for development. In goes Virtualbox, and then tried to "fstrim -v /" and got "discard not supported".
Turns out that discard has to be explicitly turned on using "VBoxManage storageattach <VM name> --storagectl "SATA" --port 0 --device 0 --nonrotational on --discard on"
I'm documenting this mostly for myself so that I the steps to redo if I forget.
Background:
Setup up VM using Apple Virtualization (as opposed to QEMU) using UMT https://mac.getutm.app/
We need ARM64 versions of:
1) linux kernel
2) ramdisk
3) linux image
I use Ubuntu and the cloud images has all the items ready for use.
Linux Kernel file
in https://cloud-images.ubuntu.com/jammy/current/unpacked/
Look for "jammy-server-cloudimg-arm64-vmlinuz-generic" and download
rename the file to gz and gunzip the file.
```mv jammy-server-cloudimg-arm64-vmlinuz-generic jammy-server-cloudimg-arm64-vmlinuz-generic.gz && gunzip jammy-server-cloudimg-arm64-vmlinuz-generic.gz```
Ramdisk
Look for " jammy-server-cloudimg-arm64-initrd-generic" and download
Virtual Disk Image
Download image file from https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-arm64.tar.gz and untar the file
While building Go program that requires Gotk3 under Msys2, this error may appear during the build.
go build github.com/gotk3/gotk3/gdk: invalid flag in pkg-config --libs: -Wl,-luuid
Run this command to fix the misconfiguration in the packaged gdk PC file and rebuild.
bash -c "sed -i -e 's/-Wl,-luuid/-luuid/g' /mingw64/lib/pkgconfig/gdk-3.0.pc"
For powershell query to obtain network adapter information of the Debian Buster vm I've installed,
I need to install hyper-v daemon
```sudo apt-get install hyperv-daemon```
Powershell will be able to query the network information once it's installed in the guest.
get-vm | ?{$_.State -eq "Running"} | select -ExpandProperty networkadapters | select vmname, macaddress, switchname, ipaddresses
VMName MacAddress SwitchName IPAddresses
------ ---------- ---------- -----------
buildVM 00155D7B6A07 Default Switch {172.25.28.124, fe80::215:5df0:f37b:6a07}
| use MongoDB; | |
| print "hello "; | |
| use feature ':5.10'; # for say | |
| use Data::Dumper; | |
| my $mongo_client = MongoDB::MongoClient->new(host=>'192.168.106.195',port=>7017); | |
| =begin comment | |
| obtaining oplog from "local" db | |
| Every mongod instance has its own local database, | |
| which stores data used in the replication process, | |
| and other instance-specific data. The local database is invisible to replication: collections in the local database are not replicated. | |
| =cut | |
| my $db = $mongo_client->get_database('local'); | |
| my $ops_col = $db->get_collection('oplog.rs'); | |
| my $cursor = $ops_col->find({}); | |
| $cursor->tailable_await(1); | |
| while(true){ | |
| say "polling\n"; | |
| while ( my $doc = $cursor->next ) { | |
| say Dumper($doc); | |
| } | |
| sleep(2); | |
| } |
// filename: sample.cpp
#include
#include "tiny_dnn/tiny_dnn.h"
using namespace tiny_dnn;
using namespace tiny_dnn::activation;
using namespace tiny_dnn::layers;
void construct_mlp() {
network net;
net << fc(32 * 32, 300)
<< fc(300, 10);
assert(net.in_data_size() == 32 * 32);
assert(net.out_data_size() == 10);
}
int main()
{
construct_mlp();
}
hello-ES6.js
'npm init'
package main
import (
"github.com/gorilla/mux"
"net/http"
)
func main() {
r := mux.NewRouter()
r.HandleFunc("/", HomeHandler)
//This won't work
//http.Handle("/static/", http.FileServer(http.Dir("./static/")))
//These will work
//first alternative
http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
//second alternative
r.PathPrefix("/images/").Handler(http.StripPrefix("/images/",
http.FileServer(http.Dir("images/"))))
http.Handle("/", r)
http.ListenAndServe(":3000", nil)
}
func HomeHandler(rw http.ResponseWriter, req *http.Request) {
rw.Write([]byte("You are at /"))
}