$ mount -t tmpfs -o size=5G,nr_inodes=5k,mode=700 tmpfs /tmp
sudo visudo username ALL=(ALL) NOPASSWD:/sbin/restart whatever
df df -h # human-readable format df -a # all filesystems
du du -hsx * | sort -rh | head -10 # largest 10 folders
yes | /your/command
Collection of cheat cheets on various OSes: linux, windows, macOs, android, iOS ...