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#
# superuser -interactive
#
sudo -i


#
# gives you a diagnostic of whats going on in
#  the machine. Shows all processes.
#
top


#
# load avg / logged in
#
w


#
# disk storage usage
#   -h "human readable"
#
df -h


#
# checks memory usage on a server
#
free -m


#
# all connections
#
netstat -a


#
# shows the last 10 lines of a file
#   -f "follow" live watches the file
#
tail
tail -f


#
# create a password (with a new username) or change 
#  the password (with an already used username)
#
sudo htpasswd /etc/apache2/.htpasswd YOURUSERNAME


#
# .htaccess for apache password protection
#
AuthType Basic
AuthName "Password Required"
AuthUserFile /etc/apache2/.htpasswd
Require user FedEx Tank