Almost everybody loves the GNU command top. Top displays information about what's going on at your system. Some systems don't provide top, this script can be used as an alternative for top:
# If the shell script is stopped with CTRL+C, the screen
# might need to be sized correctly.
trap 'eval $(resize); exit 2' 2
# A loop to display activity.
while [ 1 ] ; do
output=$(ps -eF "pcpu time pid user comm" | grep -v TIME | sort -rn | head -$(("$LINES"-2)))
echo ' %CPU TIME PID USER COMMAND'