System Summary

#!/bin/bash
CPUCORES=$(cat /proc/cpuinfo | grep -c processor);
#CPUUSAGE=$(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1"%"}');
CPUUSAGE=$(vmstat | grep "0" | awk '{print 100 - $15"%"}');
DISKUSED=$(df / | awk '{ a = $3 } END { print a }');
DISKAVAILABLE=$(df / | awk '{ a = $4 } END { print a }');
DISKPERCENTUSED=$(df / | awk '{ a = $5 } END { print a }');
DISKTOTAL=$((DISKAVAILABLE+DISKUSED));
TODAYSEXCUSE=$(curl -silent http://bofh.gotblah.com/ | awk "NR==127{print;exit}");

echo "System Summary (collected `date`)

 - CPU Usage (average)     = `echo $CPUUSAGE`
 - Memory free (real)      = `free -m | head -n 2 | tail -n 1 | awk {'print $4'}` Mb
 - Memory free (cache)     = `free -m | head -n 3 | tail -n 1 | awk {'print $3'}` Mb
 - Swap in use             = `free -m | tail -n 1 | awk {'print $3'}` Mb
 - System Uptime           =`uptime`
 - Disk Space Used         = `echo $(($DISKUSED/1024))` of `echo $(($DISKTOTAL/1024))` mb used (`echo $DISKPERCENTUSED`)
 - Today's excuse          = `echo $TODAYSEXCUSE`
"