Enable password asterisks when run command sudo

 

Run the following command in a Terminal

sudo visudo 

Scroll down to the line that looks like this

Defaults        env_reset 

-> Defaults        env_reset,pwfeedback 

Ctrl+X , Y , enter

source : https://askubuntu.com/questions/412292/enable-password-asterisks-when-run-command-sudo/412293   

 

How do I get video thumbnails on Ubuntu

 

sudo apt install ffmpegthumbnailer

sudo vim /usr/share/thumbnailers/ffmpegthumbnailer.thumbnailer 

Exec=/usr/bin/ffmpegthumbnailer -s %s -i %i -o %o -c png -f 

file save

and rm -R ~/.cache/thumbnails 

source: https://askubuntu.com/questions/1112728/how-do-i-get-video-thumbnails-on-ubuntu-18-04-1-lts?utm_source=pocket_shared