Code:
if [ 'ping $1 -c1 |grep rtt |awk {'print$4'} |awk -F "/" {'print$2'}' -gt 0 ]
then
echo "OK"
else
echo "NO OK"
fi
Error:
./ latency.sh: line 1: [: ping $ 1 -c1 | grep rtt | awk {print} | awk -F "/" {print}: expected integer expression NO OK
You can compare two float numbers in bash using the bc command:
avg_rtt=$(ping $1 -c1 |grep rtt |awk {'print$4'} |awk -F "/" {'print$2'})
if (( $(echo "$avg_rtt > 0" |bc -l) )); then
echo "OK"
else
echo "NO OK"
fi
Still, you're comparing with 0 (and you can replace it with any float here), which is never expected in a round-trip time (rtt) in ping .
To get the values, you can use the command:
ping $1 -c1 | cut -sd '/' -f5
But you still can not make a comparison of a float with integer, in addition to the problems that other users cited.
If you really want to compare the value with zero, you can do it this way:
# Salva o valor de retorno na váriavel $avg
avg=$(ping $1 -c1 | cut -sd '/' -f5)
# Converte a variável $avg para int e compara com zero
if [ ${avg%.*} -gt 0 ]; then
# retorna OK caso seja maior que zero
echo "OK"
else
# retorna NO OK caso seja igual ou menor que zero
echo "NO OK"
fi