How to convert MP3 to OGG audio format.
ffmpeg -i in.mp3 -ar 48000 -vn -c:a libvorbis out.ogg |
If you have sample rate errors, use -vn.
Archives for May 2020
GCP Create Firewall with Tags
Here’s another way to create a firewall in GCP using network tag as targets.
gcloud compute firewall-rules create "firewall-name" \ --description="egress rule to allow port 8000 to destination" \ --priority "1000" \ --direction EGRESS \ --action allow \ --network "your-network" \ --target-tags="your-network-tag" \ --destination-ranges="10.0.0.1/32" \ --rules tcp:8000 |
EC2 Password Authentication
When you stand up an AWS instance, it’s only accessible via SSH key using the default user, typically ec2-user.
Add password to ec2-user, then enable password authentication to ‘yes’ in SSH.
# Add password to ec2-user sudo passwd ec2-user # edit ssh config vim /etc/ssh/sshd_config # enable password authentication PasswordAuthentication yes # save file and exit |
Restart SSH service.
systemctl restart sshd.service |