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