#System information
glances

#Display disk usage
df

#Flush DNS cache
dscacheutil -flushcache;sudo killall -HUP mDNSResponder

#Display size of folder items
sudo du -s * | sort -n

#Count number of files in subfolders
find . -type f | wc -l

#Find files over 1gb
find -name '*' -size +1G

#Count number of files in subfolders
ls -1 | wc -l

#Copy private key up to server
cat ~/.ssh/id_rsa.pub | ssh <user>@<hostname> 'umask 0077; mkdir -p .ssh; cat >> .ssh/authorized_keys && echo "Key copied"'


$Copy files from one server to another
scp -rpC /var/www/httpdocs/* remote_user@remote_domain.com:/var/www/httpdocs

#User management
#https://help.ubuntu.com/12.04/serverguide/user-management.html

#Create user
adduser <username>

#Add user to group
sudo usermod -a -G admin username
Show groups for a user 
groups username