Question

#!/bin/bash

# Obtain the server load
loadavg=`uptime |cut -d , -f 4|cut -d : -f 2`
thisloadavg=`echo $loadavg|awk -F \. '{print $1}'`

if [ "$thisloadavg" -eq "0.01" ]; then

ulimit  -n 65536
service nginx restart
service php-fpm restart

fi

The error is:

./loadcheck.sh: line 7: [: 0.01: integer expression expected

I want to do a loadcheck shell script that can compare double instead of integer, as i want assured the load return is less than 0.01 which is 0.00 ,

If I use 0, even if the load is 0.05 , it will still execute the code.

Answer 1

in zsh you can simply use:

if [[ "$thisloadavg" < "0.01" ]]; then

the double [[ construct allows extra tests and in zsh it allows floating point tests.