Youtube-dl

sudo pip install –upgrade youtube-dl
youtube-dl videurl -o “~/Sync/%(title)s.%(ext)s”

Network

hostname -I
Show your local IP address

Files

rm .mp4.
Remove all files with mp4 extension

nano ~/.config/syncthing/config.xml
Edit the file

tail -n 100 file.log
Display the last 100 lines of a log file

sudo rm -rfv folderName
Delete a folder and all its content

Crontab

crontab -l
Show the crontab
crontab -e
edit crontab list

ls -a
Show all files even hidden ones

find -name “logo.png”
Find a file named logo.png

Others

pwd
Show where I am located / Current path

df -h
Check disk space

history | grep xxx To look for a command entered in the past