nanusdad / npm_related.md

Last active April 19, 2018 04:37

npm related issues / fixes

Error: "Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN"

npm config set strict-ssl false

nanusdad / vi_related.md

Last active April 19, 2018 04:41

VI related tips

To reverse all the lines in a file - :g/^/m0

nanusdad / certbot-initial-and-expand-domains.md

Last active August 27, 2020 20:52

Using certbot to add and expand domains to cert

To use Lets Encrypt certbot command to install certificate to work with AWS Lightsail Wordpress instance

sudo certbot certonly --webroot -w /opt/bitnami/apps/wordpress/htdocs/ \
-d domain1.org

To add new domains to certificate

sudo certbot certonly --webroot -w /opt/bitnami/apps/wordpress/htdocs/ \
--expand -d domain1.org,www.domain1.org,domain2.edu,domain3.org

nanusdad / omero-cheat-sheet.md

Last active April 17, 2019 13:33

OMERO cheat sheet

Update root password

omero db password
Please enter password for OMERO root user: 
Please re-enter password for OMERO root user: 
UPDATE password SET hash = 'ibTzrADXfsKFfNwBdQsa+g==' WHERE experimenter_id  = 0;

Check password hash

psql -h localhost omdbprim -U omdbusr1 -c " select * from password"

nanusdad / white_screen_on_android.md

Created September 27, 2019 17:41

White Screen after splash on Android builds

To troubleshoot

ionic cordova run browser --prod --release

Updates required to config.xml file

<preference name="SplashScreen" value="assets/images/logo.svg" />
<preference name="SplashScreenBackgroundColor" value="#000" />

nanusdad / learning-locker-api-auth-jwt-password-error.md

Created August 25, 2020 17:46

Error message in Chrome developer console when logging into LearningLocker

LRS error

Error message in Chrome developer console when logging into LearningLocker

Unable to connect to "/api/auth/jwt/password”

Check mongo as root

sudo su -
service mongod status

nanusdad / InstallingMoodleonAWSLightSail.md

Last active September 9, 2024 11:37

Installing Moodle on AWS LightSail

Start with a new LightSail Instance running Ubuntu 20.04

Update

sudo apt update

Install Apache

sudo apt-get install apache2

nanusdad / expanding-root-vol-on-ec2-ubuntu.md

Last active November 16, 2020 11:35

Expanding Root Volume on EC2 (Ubuntu)

df -hT
lsblk
sudo growpart /dev/nvme0n1 1

For ext4

sudo resize2fs /dev/nvme0n1p1

nanusdad / ffmpeg-cheat-sheet.md

Created May 20, 2021 04:25

FFMPEG cheat sheet

FFMPEG Cheat sheet

Compress MP4 files

ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4

Compressed file to better compatibility (WhatsApp)

ffmpeg -i broken.mp4 -c:v libx264 -profile:v baseline -level 3.0 -pix_fmt yuv420p working.mp4

Convert MOV to MP4

nanusdad / embedding-videos.md

Last active October 8, 2021 06:39

Embedding videos

Use <video> HTML element - w3schools
Disabling picture-in-picture

<video controls disablePictureInPicture controlsList="nodownload">
  <source src="https://www.w3schools.com/html/mov_bbb.ogg" type="video/mp4">
  <source src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/ogg">
</video>

Disabling picture-in-picture with JavaScript