One liners for system CPU Usage

cpu-onliners.sh

#faster
grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}'

#For grep cpu for use with juju (counts machines, then runs command remotely)
for i in $(juju machines|awk '!/lxd/&&!/kvm/&&!/^M/&&!/^$/{print $1}');do printf "Juju Machine $i CPU %%: ";juju ssh $i "grep 'cpu ' /proc/stat | awk '{usage=(\$2+\$4)*100/(\$2+\$4+\$5)} END {print usage \"%\"}'";done 2>/dev/null

#Slower, but better
top -b -n2 -p 1 | fgrep "Cpu(s)" | tail -1 | awk -F'id,' '{ split($1, vs, ","); v=vs[length(vs)]; sub("ex%", "", v); printf "%.1f%%\n", 100 - v }'

# For above command with juju (counts machines, then runs command remotely)
for i in $(juju machines|awk '!/lxd/&&!/kvm/&&!/^M/&&!/^$/{print $1}');do printf "Juju Machine $i CPU %%: ";juju ssh 2>/dev/null 0 top -b -n2 -p 1 | fgrep "Cpu(s)" | tail -1 | awk -F'id,' '{ split($1, vs, ","); v=vs[length(vs)]; sub("ex%", "", v); printf "%.1f%%\n", 100 - v }';done